68 barracuda suspension

I will measure a rim first for sure. Thanks. I didn't see any 1.12 torsion bars on Hotchkis Web site but I could have missed it. I have read some people say Hotchkis leaf springs drop the car too much, not sure
Also will the torsion bars adjust low enough for the Hotchkis leafs? And 4.5 back spacing 8" wide and I am thinking 18" wheel. Torq thrust black in center polished out outer rim and the car is yellow. Thanks for the responses Larry