Planning to redo the motor, trans, rear and suspension of my 2 dr '81 Diplomat. Presently a /6. Moving toward 318 or 360 with about 400 streetable HP(A/C/PS/PB), 2.74 904 and "B" body 8 3/4 with 3.55 gear. For front suspension, other than a Koni gas shock and aluminum K spacers, what else do I...