Possible to build a solid 8.25" ?

well I don't think I will ever get even close to 600hp (not that I wouldn't like it :twisted: )...

But when you say I can't change to 3.21 or 3.55 with the differential in the rear end, what do you mean exactly? Because I know that I need another carier for these higher gears, but is there something else?

About those gears I tought trying to find a set from a Dakota or old Ram, that use a 8.25". I have been said that 3.21 was common on those trucks, and maybe I could find one with a sure-grip.