I wish I could help you. I wanted a Vintage air unit for my '56 last July but no one could deliver for 6-8 weeks. So I went with Hot Rod Air. Big mistake. It still isn't working right. Their techs have no idea what's wrong. They've had me change the dryer 5 times, the expansion valve 3 times. I sent the evaporator back for them to check out, now the system won't hold a vaccuum. I've lost track of how many cans of r-134 I've put in it then released into the atmosphere.
If I had it to do over again I'd wait 10 weeks for Vintage Air.
