erik the pinoin is set at 4deg nose down at the ground. i can't get the rear any lower with out hitting the wheel wells. there stock other then cutting the inner a moving it in 3" so the tire would fit side to side. nitro the rear is a mopar 8 3/4 with a 3.91 gear back brace 35 spline axle spool disc brakes. the leaf springs are mono leaf with the spring rate from the chart. the front weight is 1750 and rear is 1520 with out driver. strange two way adjustables in back. i did the trick were you put a plastic ty strap around the shock to see how far it travels and it didn't even move. the car doesn't go up or down on launch. DAVE drag radials set at 15psi we went to 14-13 with know differents in 60 foots. the convertor is a neal chance 9" custom made for us. it hits around 4500 alittle tight but this is a nos combo that should run 9.0 on motor and 8.30-40ish with a 300-400hp kit.