I bought stock GT convertible springs, (a set which were MOOG) front and back from LMR with stock motorcraft shocks and new poly spring insulators. My ride is good and still handles as well as I want. My objective was to soften the ride and not lose handling. It worked, very satisfied.
Lol , i got a tiny trunk for subs - I put my 8s behind front seats on floor ( sounds great when top down - running a 1985 Yamaha amp and 1993 MTX blue thunder amp - small amps but hit hard ! ( still looking for a 1987 Fosgate punch150hd )