I am currently working on adding a power tilt/trim unit on my classic fifty Mercury. I would like to stick with an OEM unit if possible to prevent stearing linkage issues. The local dealers here have no interest in helping me to find the parts I need, not too surprising, does anyone know a good place to look and also assembly P/Ns for these parts. I have found complete breakdown parts lists but no actual complete assembly P/Ns. I believe my outboard is a 1989 model. It's S/N is OC102998. Can anyone help?