"Today, The Ford Motor Company builds the F150 and 250 pickup in 2 wheel and 4 wheel drive configurations as well as the F350, 450 and 550 (dual rear wheels) with propane as an option." "General Motors offers their medium duty truck line (up to 33000 GVW) with a propane option ." Where can we get more Info on the Fuel Tanks used ? Brien. NEW YORK eagle registry #501 eagle kammback registry