angles on driveshaft / u-Joints stock leafsprings with caltracs

clear as mud. Yes. hahahaha.

ok, first i check if I have to bring the tranny down. otherwise i would never get a straight line under load.
i'll take your numbers for caltracs and assume 4° travel because the stress at a race is much more than on the street. fu**ing angles, i already had Problems in School with that sh**** :)
Those numbers of maximum travel on the pinion can only be a guess right? I mean there is no way to measure 100%