Suspension upgrades

Hey guys, going to upgrade the Cuda suspension. Not sure where to start, or just how far and how much I need to put into it. Been looking at this. 1966-1972 Mopar A-Body TVS Suspension System, Dart, Duster, Valiant, Demon Too much?. Not looking to auto cross, just want good brakes and great handling. Hope to go to OD trans too. Have not searched this thread just yet. Looking for opinions and thoughts, especially if someone has already done this. Been going through all my old Mopar Muscle mags looking for a build I may be able to follow. Getting it done professionally. Will be swapping motors also and possibly looking for a good set of heads to put on a 340. Suggestions, realizing I have not given a lot of info on the motor.

228653813_10161052984279325_56924906285520358_n.jpg

Hood.jpg