Q&A

 Master

This is a tough job because you have to drain the A/C System in to a recovery system and then remove the entire dash and then remove the entire heater plenum. It takes a professional a whole day and then some.
Just take your time and take PICTURES, seriously, so you can recall where the various wires and fasteners and brackets go etc. If you do that, then it is just a huge jigsaw puzzle, it is not that tough to do, if you are not pressed for time. Oh yeah, use a FORD heater core, because you NEVER want to have to do this job 2 times.