we had our local car show and a vintage mechanic shop locally quoted me over 8 thousand to install a vintage air in my 64. (Today I have no AC which in Sacramento is an issue in the summer). That is too much for my budget. I believe the units are a few thousand so I'd definitely go the route of self install if you are mechanically inclined. I have 2 years of auto shop training from high school and 10 years working on my first car (68 Camaro) so I may take the plunge. Overall agree if you have a system in place and can upgrade, go with that first. If that doesnt work out, you can alway go the after-market route. Good luck!