Thanks for the tip about Vintage Air.
I bookmarked them for later.
The Blazer’s AC system is overall bad shape and I’m not a purist for factory this and that.
For what it would cost me to buy all the stuff to make it look factory plus all the AC I don’t know, I’m for yanking the remnants. It was a barn find.
I put an aftermarket marine type heater in my 65 Willys. All of the original plastic at up so much room.
The marine unit wasn’t much to install
I kind of over-engineered the dash wiring job and didn’t allow for a defrost duct and hose.
It’s been a long while, but I remember the Unit didn’t actually integrate into the Car’s Ventilation System.
It meant you didn’t have to mess with any of the Factory Dash controls. The Car’s idle had to be adjusted up because of the drag from the pully. The good old days of a Holley 4 Barrel.