Aluminum radiator for a 1976 Volare Road Runner?

Does anybody know where I can find an aluminum radiator to fit a 1976 Volare Road Runner? The car was originally a 318 car but now has a modified 340 engine. The engine compartment is nicely detailed and I'd like to use an aluminum rad for both better cooling and good looks.

I've surfed the Net looking but haven't had any luck finding a listing for this body style. Any suggestions would be great!

Does your car have a 22" core if so I used a 22" 4 core champion rad for an A-body. I just had to slot the mounting holes and I fits great and runs cool.

OK- gonna take a stab at this one-
Since the F-bodies are so closely related to the M-Bodies...
Over at M-Body forums there is a tech link for upgrading to a 3-core aluminum radiator designed for the 87 Dodge Ram/Ramcharger.
I used this radiator in my 82 NYer....and authored some of this link.
Here's the link-
http://www.dippy.org/forum2/index.php?topic=24.0

You MAY be able to use this radiator in your RR. Maybe, Maybe not, but it's a cheap alternative.

Hope this helps,
CC.