It was a long process getting the vintage air system installed (getting the old AC system out was a big part of that), but it works very well.  I am still chasing down a small battery drain (unable to trace to any of the fused circuits).  It only drains the battery if I let the car sit 2-3 weeks, so i just keep a tender on it for now (also not sure if installing the VA system created it or just increased it a bit).  Anyway...I am not looking backwards with any regrets.  That car was unbearable to drive at any ambient temperature above about 80 deg F without supplemental cooling of some kind (even with the tops off).

Good luck