As you can see from the following list, very few fleets convert small economy vehicles like Honda Civics and Toyota Echos.  Although quite common in Europe, vehicles like these do not have any EPA-certified kits available for North American roads.  You may find North American fleet kits at our e-commerce site.

Technocarb Equipment

• LPG Vehicular Equipment Certified by Daimler Chrysler Mexico, for Dodge Durango,, Ram-2500 & Ram-4000 with 5.7L Hemi Engines
• LPG Conversion System FORD SEDANS Dedicated and Bi-Fuel applications with 4.6 Litre Engine
• LPG Conversion System General Motors “W” & “N” Body Sedans Dedicated and Bi-Fuel applications with 3.1 & 3.4 Litre Engines
• CNG and LPG Conversion systems for GM 8.1L Medium-Duty Vehicles
• LPG Conversion System General Motors Trucks & Vans Bi-Fuel or Dedicated applications with 4.8, 5.3 & 6.0 Litre Engines
• Sequential Vapor Injection - General Motors 8.1 Litre Engines
• Universal DIY Bi-Fuel Vapor Injection Parts Packages for 4-cylinder, 6-cylinder, & 8-cylinder engines.
• Universal Diesel-Propane Dual Fuel System - EcoDiesel System

Technocarb products are available in the Raso Enterprises e-store.

Advanced Fuel Technologies Inc.

• Cummins Westport B LPG Plus engine installed in a bus chassis

BAF TECHNOLOGIES

• exclusive marketing rights in the USA to all Teleflex/GFI Control Systems after-market LPG products.
• FORD E-450 - 6.8L V10
• Ford E-450 6.8L V10 engine Cutaway Bus
• GM C4500 and C5500 LPG Bus
• GM Medium Duty 8.1
• GM Full Size Sierra & Silverado
• GM Mid Size Pickups & SUV
• GM Express and Savana Vans
• Hybrid Fuel Systems for use on medium-and heavy-duty engines

Baytech Corporation

• GM Topkick and Kodiak C4500/5500/6500/7500/8500 Series
• Medium Duty Trucks and Cab/Chassis C2500/3500 with 8.1L engines - Propane Sequential Multi-port Fuel Injection
• CARB and EPA certified systems are available for the 2.5L, 4.3L, 4.8L, 5.0L, 5.3L, 5.7L, 6.0L and 8.1L engines

CleanFUEL USA

• Propane powered OEM vehicles
• After-market fully certified engine fuel systems
• Liquid Propane Injection system for the GM 8.1 Liter Heavy Duty engine in 2006 Model Year vehicles.

CUMMINS WESTPORT

• C Gas Plus
• B Gas Plus, B Gas International, and B LPG Plus
• L Gas Plus

EBUS, Inc.

• Ebus offers two styles of propane/electric vehicles: the Transit Bus and the Vintage Trolley.

ECO Fuel Systems Inc.

• General Motors vehicles with 4.3L, 4.8L, 5.3L, 5.7L, 6.0L, 7.4L, 8.1L engines
• Ford vehicles with 4.6L, 5.4L, 6.8L engines
• Dodge vehicles with 4.7L, 5.7L engines

EDPRO Energy Group Inc.

• 4.6 Litre Platforms
  • Crown Victoria, Police Interceptor, Grand Marquis, Lincoln Town Car
• 4.6 & 5.4 Litre Platforms
  • F-250-F350-E250-E350

HEART INTERNATIONAL

• Low-floor bus designed specifically for the General Motors Family-2 Commercial Cutaway Chassis with an 8.1-liter gasoline engine

Hybrid Fuel Systems / DRV Energy

• GM/Chevy 4.3L V6 Bi-Fuel CNG
• GM/Chevy 5.3L V8 Bi-Fuel CNG
• GM/Chevy 6.0L V8 Ded LPG
• GM/Chevy 6.0L V8 Bi-Fuel LPG
• GM/Chevy 6.0L V8 Ded CNG
• GM/Chevy 6.0L V8 Bi-Fuel CNG
• GM 8.1L V8 engines (approval pending)
  • Used in GM Topkick / Kodiak C Series
  • Workhorse heavy-duty vehicles with Gross Vehicle Weight Ratings ranging from 16,000 lb to 37,600 lb
  • GM Silverado / Sierra 2500HD / 3500 pickup trucks (Federal) and Chassis Cab (Federal and CA).
• GMC / CHEVROLET 5.3/6.0L (approval pending)
  • Chevrolet Silverado, Chevrolet Silverado SS, Chevrolet Suburban, Chevy Tahoe, GMC Sierra, GMC Sierra Denali, GMC Yukon, GMC Yukon XL, Cadillac Escalade, Escalade ESV and EXT, Chevrolet Avalanche
• Ford/Merc 4.6L V8 Conversion

Jasper Alternate Fuels

• Jasper offers a line of engines that operate on alternate fuels. The line of remanufactured alternate fuel engines includes the Cummins 5.9B LPG engine as well as Ford and GM LPG engines.
• The Jasper 460 AG engine has been CARB certified for off-road use in California.

Parnell USA, Inc.

• Dodge 
  • Stratus Sedan (JR) - 4.7L
  • 4 Door - 2.4L
  • Caravan/Grand Caravan (RS) - 3.3L V-6
  • Durango (DN) 4X2,4X4 - 4.7L V-8, 5.7L V-8, 5.9L V-8
  • Dakota (AN) 4X2, 4X4 - 4.7L V-8, 5.7L V-8
  • Ram (DR) (BR) 4X2, 4X4 - 3.7L V-6, 4.7L V-8, 5.7L V-8, 5.9L V-8
  • Dodge Ram (DR) (BE) 4X2, 4X4 - 4.7L V-8, 5.7L V-8, 5.9L V-8
• Ford
  • Crown Victoria - 4.6L V-8, 5.4L V-8, 6.8L V-10
  • F-150/250/350 4X2, 4X4 - 5.4L V-8, 6.8L V-10,
  • E-150/250/350/450 (Van, Wagons, Cutaways) - 5.4L V-8, 6.8L V-10
  • SUVs: Expedition, Excursion - 5.4L V-8 6.8L V-10
• GM
  • C-1500/2500/3500 4X2, 4X4 - 6.0L V-8
  • K-1500/2500/3500 4X2, 4X4 - 6.0L V-8
  • G-1500/2500/3500 - 6.0L V-8
  • SUVs: Tahoe, Yukon, Suburban - 6.0L
  • Isuzu WD’s -   6.0L

The Propane Education & Research Council has a listing of propane-fuelled vehicles that you may also find interesting.  The US Department of Energy also has a list of propane links.