Restore factory ac or go aftermarket

modern system also,, but be prepared. I put vintage air in my 67 cuda. the evap/heater box is much easier to install with the dash out. I had to weld some brackets in to mount it to. I really dont know how you would run the hoses as per factory, I ran mine thru the wheel well to keep them out of sight but I dont see any decent route. I also dont have the ugly firewall fan motor any more as the new one is all internal inside the car. Do Your Homework first. They dont have an A Body specific unit. Cars not finished yet (8 winters so far) so I cant tell you how great it works.