ok here is the run down on the alsion and such, 01-05 were a 5 speed 06+ are 6 speed there is basically NO DIFFERENCE 1-4th are the same and you can go to suncoast trans and get the 5-6 conversion it should be a valve body and a tuning issue, alisons dont work like a reg trans as in there is no drive driven and held in the planataries there is one drive and 2 driven the 2 driven are at 2 different speeds obliviously, this gives you more gears without having alot of planateries, there are 3 clutch pack in the trans 1-2 3-4 and 5-6 no matter if the trans is a 4,5,or 6 speed they are one in the same, they are also the simplest/ easiest to build trans ever ive built one within 5hr or so from tear down to reassembly, and as far as fuel lines go that e-80 is the same as any gas i belive you will need 100% new fuel system thoes lines are contaminated with gas i would never run diesel through them IMO