Torsion bars for better handling; your experience?

Thank you!
275 35 18s on 18x9s. Backspace, ride height, and brake system are very specific to make this fit properly.
I’ve got a 68 Dart, w 275/60/15. Was gonna go with 17” Bullitts from American Muscle but still undecided. Undergoing renovation. Recently added mini-tub, offset spring hangers and/or in-frame relocation. Thinking of doing the Jeep Liberty disc swap.
Up front I changed to 73 discs back in the 80s, but recently got the bigger Córdoba discs w/dr diff brackets.
I Have 1.12 bars, Reilly uppers & struts, Hotchkis F&R sways, rear springs & Fox shocks all waiting to be installed.