I was going to suggest just leaving the heater core in place, but knowing you, didn't think that would be an option. I tend to agree with that choice; the heaters on these cars just don't go bad.

Glad to hear the task is going reasonably well. Like you, I found the work easier and less intimidating than expected. Although I share your disdain for working under the dash, it does have its advantages - there are no huge, high torque fasteners which won't break loose, and it's reasonably clean - nothing is covered in grease and oil.

Let us know how you make out with those two stubborn screws.

- JimY