That's exactly what I already did! I actually have a heater core for it because my dad had started pulling the bad one to do the replacement before he passed. I'm figuring I'll be pulling the dash, rust guarding the interior, and replacing the carpet before it gets cold enough to need the heater, so no rush in getting the new one installed. I haven't had a chance to grab any antifreeze and starter spray. Planning to stop on the way home tonight, but I'll be unloading the truck that it was attached to in the picture after I get home today, so I doubt I'll get a chance to try and fire it up until tomorrow.