I took 6 bolts and nuts out of the heater core cover but it won't budge...
I also removed the front bumper. Now that was a chore but not really bad. I sprayed a type of breakfree (ZEP 45) on each bolt/nut for months, whenever I happened to go into my garage. Each came off pretty easily with my Proto breaker bar and ratchet.
I have its hardware in an Evaporust soak...
