No, but they could.
If you want to cut out the opening, and swap it with the opening from the 80's truck, it can work. But then you have the issue of the interior duct work, The heater/AC box is different, and the 80's ducts are different, so the connecting ductwork will not fit.
Then you have the issue of the controls, and making them work. 70's mounts way differently then the 80's stuff.
Heater cores for 70's trucks are not made any more, so be aware if you find one in poor condition. Some have adapted an 80's core with some work.
Not easy, but not insurmountable either.
Might look into after market stuff like vintage air, or the others that I cannot think of right off.
If you want to cut out the opening, and swap it with the opening from the 80's truck, it can work. But then you have the issue of the interior duct work, The heater/AC box is different, and the 80's ducts are different, so the connecting ductwork will not fit.
Then you have the issue of the controls, and making them work. 70's mounts way differently then the 80's stuff.
Heater cores for 70's trucks are not made any more, so be aware if you find one in poor condition. Some have adapted an 80's core with some work.
Not easy, but not insurmountable either.
Might look into after market stuff like vintage air, or the others that I cannot think of right off.
