Miatav8,MstrASE,A&P,F wrote:
I do not know of any diff where the pinion is not offset in the housing at least a ½ inch. I suggest keeping the geometry you have front and rear. Then you only need custom longer axle shafts between the joints and a wider steering rack between the inner joints (assuming the current width rack is correct). The shafts should run about $250 or less, just fit new one-piece boot kits to the old joints.
If still want to change to a different diff, use google to search. The forum search doesn’t recognize 3 characters or less. I suggest the mid-90s tbird v6 7.5 irs with ratios from 2-5:1.
Thanks ! I've really thought about what you said and I agree on many ways. I'm going to try get the front all sorted out and when the engine runs I'll be in a better spot to decide the rear end. I think the replacement axles is probably the way to go. Even at 500 hp but less than 1300 lbs I would probably be gone and have traction problems long before.
Appreciate you drumming sanity into my head!