I'm getting ready to put a lift kit on my truck and didn't have a torsion bar tool. Well, after seeing that they go for over $100.00, I set about making one with an old 6" C-clamp I had. Cut the flat part off the threaded rod and welded on a 15/16 nut on the other end, then welded a piece of a bolt to the upper end of the clamp. The bolt holds the clamp firmly on the crossmember and the tit on the end of the threaded rod fits the indention on the key perfectly. Total cost = zero.
I'm sure this has probably been done before. What to you think?