I ordered 51 inches which means about 6 1/2 inches will slide over the rear rear and the front it will but up against the torsion bar mount. I don't see how there is any possible way yours would be long enough at 40 3/4 inches total length. That doesn't even come close to being long enough. I wondered if you actually meant to type 50 3/4 instead of 40 3/4 on your diagram?
