Sounds like a fun piece, but I don't have anything Chevy, except an 85 GMC sierra carburetor. And you would be getting a bum deal on that trade
I would post it and an asking price on here and see if you get some bites..... plenty of fish on here.
Sometimes there's an Olds guy or 2 hanging out in the shadows in the Chevy forums so you might post there too.