It's lack of insulation.
There really isn't any.
Gonna put dynomat and a new carpet with a thicker pad.
Hopefully, that will cut down on the heat coming from the floor.
I bought a 79 Y84 SE, and it always feels like the heat is on in the car.
The car is not overheating, but I wonder if I need to put better insulation under the carpet and if that will help with the heat coming in.
Any other suggestions would be helpful.