just doin a quick check with DR REBUILD, it looks as only a few seals are interchangable. most parts go from 68 to 77 .
if any one knows otherwise let us know!
thanks for the offer though !
joe

I have to say it's nice to see a car worse then mine

i ressemble that remark !! 
ya, when i got this beast it had
no engine,
no transmission
no interior, actually wrong dash board '84'-ripped that out!
everything else was gone
no wiring, wrong wiring '84'-ripped that out too!
body in primer, so needs full paint job
replacing all suspension parts
other than those things, its in pretty good condition !!
joe

[QUOTE=68vet427]...other than those things, its in pretty good condition !!joe
[/QUOTE]


A little wax, and she's good to go!

Joe, yep...yer car is an A/C car. That's good. It'll be a lot less hassle that way. Looks like the stuff you got will work fine, and it appears to be a fair condition. Good luck, and have fun installing it! I would suggest you get the factory AIM(Assembly Instruction Manual) for your car, if you do not have one. It will be invaluable to you in rebuilding your car.

way ahead of you !
i bought one from corvette america when i bought the car !
i figured i would need all the help i could get !!
i've never done a project like this !
i appreciate all the help i get from every body here !!!
i hope thru all i'm doing on the vette i'll be able to contribute back with all that i'm learning !
joe

Hey at least you new what you were getting. My dumb ass wanted a fixer upper had no idea what that meant till now.  the only difference between yours and mine you have fiberglass front end mine does not and worse main was running when I first bought it.

Joe;
They molded the bodies with the heater hole, and they cut out the extra on the assembly line.  I am sure I saw a diagram somewhere in the Assembly Manual, but it seems to me it was somewhere I didn't expect to find it.

To add insult to injury, The hole in your firewall is hacked out more than it should be.  I have a photo of a factory A/C firewall, if someone can help me post it.

Other considerations:  A/C cars only had a vent on the right, and it was vacuum controlled.  Heater cars had two vents, cable controlled.  A/C cars had another hole on the upper right of the cowl, under the fender.  I was stupid enough to not take a picture of that.

If it were me, I would patch the firewall and use an aftermarket system.  It is cheaper and easier, and works better.  I have used the Vintage Air system on other cars and been very happy.

thanks for that update.
if you find what size hole it should be, it would be appreciated. i will try researching it myself.

joe

DOES ANYBODY KNOW THE DIFFERENCE BETWEEN THE INSIDE DUCTING (UNDER DASH)  FOR A/C BETWEEN A 71 COUPE AND A 79 ???
THANKS,
JOE