You might add some double adjustable shocks to your list of things to try. I know my car even when it 60d slower than it does now had way to much separation when I tried to run with those when I broke one of my rancho shocks.
Edit I just saw your other post. You might look into the Viking double adjustable shocks. I know mine were way less than $700 and I have been real happy with them.
that is my next thing, saving up for them , I appreciate the advise
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5