Another thing about universal kits:
They don't fit all the time. Let's see: there's a side gasket, that supposedly will go on. It won't fit. So I had it glued in place- then took it out. I ended up using some small pieces of the felt-like material included in the kit. This gasket is way too thick- you can't begin to slide the RT side assembly over the gasket and around the HC assembly. Maybe other years are different. My 71 won't use it.
Either way, the RT side assembly has 2 front screws and one top screw holding it. Unscrew them, clean the ducts, then re-install using I eneded up using soem felt and slits of duct tape- hey it worked. It won't rattle and I had a small crack on the seam- another reason why the gasket made the probelm worse- it would have snapped if i'd have forced it over the gasket.
So, using duct tape solved my crack and sealed it up nice.
Another thing about kits: Where are the rubber seals and flapper door to repair/refurbish/rebuild inside materials? All-incompassing kits= yeah, right.
Nowhere does this kit include redoing the whole assembly. There are a lot of cars out there with worse HC assememblies than mine- say sitting out in the elements/junklyards, etc.
Sooner or later, a TRUE rebuild kit would make sure to have everything needed.
That said, mine ionsides are fine, seal wise. the flappers were still soft and bumpers (so it doesn't just open and make a noise) were still present and OK. If the inside rubber guts are bad- you're outta luck and will have to make your own.
And again, here's some "extras"- not like my seal i pulled off (anmd left on the vacuum hose in the car). Afterwards, the vague diagram listed them as AC evap seal parts for the firewall. Ok. Where's the new piece for mine?
And, last but not least....
The heater tube seal. A pain to stretch-pull on (gentle, though)- which way does it face? Yes, one tube is bigger, and the gasket has a small hole and a larger hole. But the darn gasket can be flipped, you know.
You have to check back in the cabin of the car. In the car (shown in the pics) the gasket's curved end coincided with the left side. Now install that on the tubes correctly.