I removed all my AC stuff in my 69 convertible. I repaired the firewall to match a non-AC car and used all non-AC parts to have heat. That included the blower motor box, heater core box, ducts, controlls and everything else to make it a non-AC car. In my case every thing was missing under the hood, the inside parts were a mess and it's a convertible in MA. I didn't need it.
