If you need new torsion bars, they are cheap for A's, something like $100/pair if you pick the popular choice ~1.00"D as I recall. I got a pair at a swap meet in Sacramento years ago. They seller had several pairs on the table for just $15/pair. I put small-block ones in my slant-six. But, do a complete suspension rebuild while in-there. Hope the rear anchors at the transmission cross-over are OK. In later years, the factory used just a few spot welds which can break to let the anchor rotate, but easy to weld back if not too rusted.