So this is the stuff that drives me bonkers. There are loads of threads and posts that will come out right and contradict what your saying. That driveshaft angle doesn't matter and its all about trans output shaft angle and pinion angle. See post 14 and 18 in this thread linked below to see what I mean. Others who appear to know what they are saying, claim to come down 5* off of the trans output angle and that will give you your pinion static angle. Which your saying will be way to low. I did read in very few publications the mention of needing to know the driveshaft angle, so I'm not willing to ignore what your saying.
Our fist track day is tomorrow. I'm quickly watching it slip away by not coming up with a definitive answer. I do appreciate all the dialog though.
pinion angle