[JaredWOT]

My 2003 Mach 1 is about to have a fresh rebuilt t56 installed. I have a McLeod clutch, FRPP billet steel flywheel, adjustable clutch cable with aluminum quadrant, and an MGW race shifter. The big question is, do I run 4.56 or 4.71 rear gears for the few years between now and boost? 4.56 would put 1st gear right around where it would be with 3.55 gears in a tr3650, and the rest of the gears would be fairly close to the same ratios as with 4.10 gears in a tr3650. 4.71 gears with the t56 would put 1st gear right around the same spot as 3.73 gears in a tr3650. Obviously, the rest of the gears in the t56 with a 4.71 rear gear ratio would pull a bit harder, and ride slightly higher in the rpm band, than 4.10 gears in the tr3650.
4.71 gears made by US Gear
4.56 gears made by FRPP