Transmisison 904 vs. 727

Gold75, I think your 8 1/4 is integral 3rd. member? If you decide to up-grade to 8 3/4 or 8"/9" ford,with removable 3rd. member, their easier to service(on the bench).Easy to exchange for say drag or track day use. If you decide to up-grade to an auto with o.d.,would be like best of both worlds, lots of rear end ratio and good cruise rpm. Good Luck, ateam.