What to do...

1.good set of adjustable rear shocks. Spend the money, they’re worth it.
2. Better front shocks. Not as important as rears but still worth it.
I would contact Calvert with some specs and ask they’re recomendation.
Tune tune tune on the suspension. It seems you’ve got the engine pretty dialed just need to get the chassis to follow suit. Love your car been following it on here for a while.