. i know this has been brought up before,---have steeda Boss springs, lowered the rear,around 3/4".have the bottom of the spring pigtail end parallel to the axle shaft. BMR rear upper and lower control arms. QA-1 panhard,w/Steeda brace.a 1 piece aluminum Axle Exchange driveshaft.whiteline rear re-location brackets(not yet added)whiteline trans insert.problem is wheelhop. initially,had the upper BMR mount in the upper hole. moved it to the lower.have checked pinion.here is where i'm second guessing myself. i don't know the factory pinion angle with the 2 piece shaft,but i am chasing the angle. on the diff-the bottom lower flat,behind the flange is ,give or take a 1/2 degree, is 0. the driveshaft is 4.5.from my drag racing days,thats close. i can't shorten the upper arm any more,to bring down that angle.its at it's shortest now. shocks are set at 3. i swapped over the stock Parellies to 18" nitto 555s,which have more sidewall. still getting hop.but not near as bad.at hiway speed,no vibes,a bit of rear gear whine,when i let off,coast,which is another thing.i know i can set the shocks firmer,but feel it should be cured by now. ideally,i'd like 2-3 degrees.what are ya'll running with the 1 piece shaft?