I'm very familar with Factory A/C and trying to get the #2 and #4 plugs out. Not to mention the other one with the A/C lines. lol. It's amazing how small the engine compartment becomes when added with thing like pwr steering, brakes, A/C. It's actually quite big without all of the other stuff.
Restoring a 1968 400 4spd, numbers matching Firebird Coupe, Verdoro Green. Larry My old 68. Wish I had her back.