Well the original 8" is set at 5 degrees up. (5 degrees down when upside down) I always thought they should be down.
I can't measure the driveshaft as the engine and trans aren't ready to be installed yet. Any slight changes I will correct with shims. Once correct I will tack the shims in place.
1967 Ford Mustang (under construction)
Engine- 347 stroker, 10.5:1, aluminum heads
Drivetrain- T-5 trans, 8.8 explorer rear
Suspension-620 springs, 5 leafs, front+rear sway bars
Brakes- 4 wheel disc
1999 Saturn sl2 5 speed (110hp monster)
1999 Suzuki Bandit 1200 (custom frame streetfighter)