74 Duster 318 seat push-button thingy

I too am Very interested in these pieces, as I have destroyed both sides for my 74 Duster. I now refuse to have more then 3 passengers because I will not let anyone "Hop" over the front seat every time they need in or out of the back. having as many friends without proper vehicles as I do requires me to be choosey whom I hang out with at any given time. Please, if anyone has the information required both me and buffoni88 would appreciate it greatly.