driveshaft angles

damn,...look at it this way, each u-joint needs to be equal degrees but opposite pitch from each other!! add a degree or 2 to rear if racing! yall thinking toooo much, need to get outta ya own head a lil bit!! way i do mine is on level ground put cinder block under each tire so every thing at ride height!! set trans output shaft up 3 degrees then set pinion down 3 or so degrees, wield ya rear end perches,..then send the bish!! now if ya working on a big truck that takes a totally different approach!!