I just pulled the air shocks off, that came w/ my 70 cuda...I put KYB shocks all around, rear sagged, I replaced leaf springs w/ standard leafs, It still was lower than my front...I then adjusted my front end lower, and the car sits great. I'm not sure exactly the name, but the bolt just inside of the tires ( Chryco...a little help? ) I then had the front end alligned. Car has never driven better! And I think, looks good as well.
Good luck
Cudaaah