My trunk does not stay open. I bought a new set of torsion bars because the guy that put my car together swears he did this correct. I thought maybe it was my bars. My car was involved in a wreck twenty years ago and although I put all new metal on it, I left the hinges/torsion bars and it appeared to be a little out of alingment. So I found a pair off ebay that are in good shape. Is the 67 the same as 66 in the way that they twist?