Dana60 question
XakEp said
Looks like either of them will work fine. The 8-1/4 will be fine with 300 hp. I ran one in my 93 Dakota with a 318 that was putting out right at 300 hp and I raced it for years and never tore it up.
BTW: If you haven't ever installed a gearset don't try it without at least a good manual and the proper tools to set the pinion depth and backlash or they'll howl and not last any time.
Deffinetly also make sure it is a sure grip or putting in the lower gears will just cause you to smoke the right tire and not go anywhere. It looks like the stock rear end the car came with so it's propably not a sure grip.