"Ours is a '87 GMC International 8.2L Detroit Diesel with Alison Automatic Tranny, and Drum brakes. The fuel system configuaration differs from a standard one in that the fuel travels from the tank through a 30 micron filter into the lift pump and then through a secondary 10 micron filter before entering the fuel injectors. This is similar to some Mercedes engines. Standard engines usually run tank->filter->injector pump. So this caused us to differ our conversion from the standard one slightly, and made our conversion a bit more challenging i think- but i could be wrong, we aren't mechanics by any stretch."