Differential

 I found a Ford 9" rear end on e-bay that was the right width, the problem
was that it was built for a 2000 hp dragster. Here it is with ladder bar
and wheelie bar mounts, I'm pretty sure I won't be needing those

I did some calculations and figured that I needed a 3.0:1 final gear
ratio to get 78 mph in 2nd gear. I found this pumpkin locally with
3.0:1 ratio and lsd for $100.00-score!

The diff came with these lightweight 4 piston calipers and
some really cool discs.

Check out these axles, every ounce is machined out of them

I sliced off the old mounts, added new ones and cut a bunch
of lightening holes.

Here it is in the car, just clearing the cell.