Tail / Driveshaft Angle..???

with the links scamp sent you, you might try 5 deg. pin. ang. I have a service manual for 67 ply. and even they dont give an exact degree. they just give a chart with there special tool that`s just a graduated level tool. what I`v always read, is what ever angle the shaft comes off the tranny, the same angle from shaft to pinion? I need to get mine corrected too, cause I rearched the springs for clearance. mine starts to viberate around 70 mph. It used to be way worse cause of tire balance issues. had my rebuilt shaft checked by another balancer and said it was good. running mags without weights on outside of rim can cause viberation problems. goodluck let us know how it turns out.