i have a 69 charger that i am in the middle of bringing back to life,it is a 440 auto trans with factory a/c.at this point in my build I am in the process of deciding what to do with the a/c,options are to have my factory box completely restored,its a disaster,go with a classic auto air perfect fit system for a non-a/c car,my concerns with this unit are the fact that I would now have 2 large holes in the firewall that are not used,which means they would have to be either blocked of with some metal work or welded closed and painted to match the color of the car,neither of which is a big deal,and finally the last option would be to get a hot rod or universal a/c kit and make it work.I personally think that getting the stock unit repaired would be the way to go,but never have felt the stock a/c unit working is it an adequate system to cool the car in the middle or summer?I really dont want to go through all this only to be dis-appointed by the performance of the system.Any imput would be appreciated,thanks