Guy's car is a 72, which can make a difference. Stephen's advice regarding the glove box removal is what the FSM calls for on the 70-73 models. That's not necessarily the "prettiest" method as you're left wondering if you have to mangle it like a bit of origami to get it in and out. (And possibly it was an origami fan that wrote that bit of the FSM.) The method described by MEZZ is halfway there, but you don't have to disconnect the air box and hoses. Essentially, you DO remove the Heater