lower control arms
There is a spring clip in the rear of each tortion bar mount that has to be removed before the bars will slide out the rear. If you use a pair of needle nose pliers you can squeeze the little tabs together then just pull them out.
When I removed the front suspension & K-member from my 66 Valiant, I had to take a large hammer and just drive the suspension slowly off the torsion bars, because they would not go out through the rear monuts. I put those things in there about 20 years ago, and figured it would be a snap to get them back out - NOT!! Once they were off in the front, I just gave each one a light tap with a hammer and they then slid out the rear. Hope this helps.