Thanks for the info guys. Talked to the guys at QA1 and Firm Feel and the parts should work together based on their specs. I have now done both sides and I will get the car of the jack stands and see how it sits with full load on the suspension.

1970 Plymouth Cuda, 512cid on 230 400 block, 5 speed manual.(TKO 600)
1970 Dodge Charger 500, 446cid, 5speed manual.(TKO 600)
1969 Plymouth Roadrunner, 383cid, 5speed manual (Tremec TKX)