Thanks for your reply. I may start with the shocks. Do you remember what shock you used?In my opinion, rapid dive can be slowed a bit by a better shock but more of the fault lies with the torsion bar itself.
Here is what I learned....
In 2014 I had 1.0 torsion bars and KYB shocks in my red car. I changed to 1.15" torsion bars and Bilstein shocks at the same time. The ride was actually better with the second combination.