I would use a new one. Who knows what's inside an old one?
Order one near or bigger than stock and make your own mounts.

I'd be interested to see where you are going to put the a/c compressor and
the bracketry.
Jeff

"Jeff Grohs" wrote...

The Lark Evaporator will "fit". A Hawk one would be a better choice. Any
62-64 unit will do. I think the difference is the position of the fans-
 (I think)the Lark scroll cages are mounted lower.
The bottom of the Hawk dash will need to be releaved for them to fit.
This just involves cutting some fiberglass below the defroster/heat
switches... where the dash panel changes shape near the middle.
Here's a Lark unit in a '62 Hawk: I didn't trim the dash on this one-
but should have. I didn't have an example to look at, but later saw a
couple original installs where the dash was trimmed for the AC unit to
sit higher..
Expect to pay $150-$250 for the evaporator (if you can find one). Price
will be comensurate with condition.

http://www.ncsdc.com/ShopProjects/winns/images/413.jpg

The drop-brackets for the AC unit are simple- they are just 1"
strap-iron bent like C-channel. I'll try to get a photo- but don't have
an AC equipped GT handy.

With the R2 Supercharger mounted in the "V"- all brackets must be
custom-made. Noone makes them. The problem isn't the AC Compressor- it's
adding the alternator. The AC will just go where the Alt is now.
I have done this twice- On a '57 GH, I used an original Stude
Prestolite. On My Ugly Truck (MUT), I was able to piggyback a Delco to
the compressor's 2nd pully. In this configuration, you won't have any
hood-clearance problems, but you will need to trim the fan shroud. You
also may wish to shim the front end (body)up at the front fender frame
pads and radiator support. Just a little here makes a big difference in
clearance. You can also lower the motor mounts, by looking for some
thinner ones. I used 1957 Chevy mounts with custom-sized washers on the
GH (and My Hawk when the SC engine was in it). I don't have any
clearance problems on Ugly.

http://www.ncsdc.com/ShopProjects/UglyTruck/Eng/index.htm

***You cannot use the AC compressor adjuster from below (as used on MUT)
on a Hawk. It hits the inner fender. You will need to create an adjuster
from above.

It's alot of custom fabrication, but it really isn't too difficult. You
will need a drill press and a welder. The drill press makes it easier to
drill more accurate holes- for alignment purposes. I usually vice-grip
my brackets together to get the alignment- then tack-weld them in place.
Once removed, they can be fully welded.

Ray