This is going to be a nice sunny day car so IMO A/C is essential, more so than heating (although I’m including heating for those brisk nice mornings etc).

On a trip out to the USA I picked up an ID-255 “In dash” combined heater and A/C evaporator from Nostalgic AC Parts – http://nostalgicac.com/evaporator-units/indash-evaporators/id-255-heat-air-in-dash-evaporator-unit.html

This needed somewhere to mount it so more welding.

I’ve changed my mind slightly about how I’m going to mount it though, I was going to bolt it in from both sides but that then means it’ll be impossible to remove/replace without un-riveting the end panel. So I’m going to make one end captive pins into rubber grommets and the other end will bolt in place.