I was looking to replace the worm gear in my original manual box but was told not to bother with it since it was too much work & it would be cheaper to just replace the whole thing. I was told that Checkers & Auto zone should carry the original replacement box. I've called both Checkers & Auto zone and was told that they don't shown any manual steering boxes for the '73 Cuda. The kid at the counter told me that if I could provide him with the parts #, he could run a cross check through the book. Can any one PLEASE provide me the #, the manual that I've got does not shown any...Thanks in advance you guys!!!