I had a GTD GT40 back in 2003 and the A/C was not good enough for the Texas summers as the condenser was back by the engine. My CAV is much different with the condenser up front by the radiator and I had the car out last Saturday afternoon and it was 98 out and I had to turn in down the A/C to low as my daughter was freezing. My car does not get hot inside at all as the bulk head is insulated very well and it has a kick ass 408 stroker in it.....Not sure how ERA GT40s are setup or where they put their condensers.......
Few more pics of this ERA GT40 over on GT40s.com where it has been for sale. That ad states it is titled in CA as 1965 Ford GT40.
http://www.gt40s.com/forum/gt40-cars...40-2066-a.html