That's just what you need.
Here's a link to a guy that did one on small block Mopar. I know it's not a Pontiac, but don't see why it couldn't be adapted to a Pontiac manifold. He lists the builder as Bruce Bridges of F&B Performance Engineered Products out of California. Might look into them and see what they can do. Talk to you later.
Clay.
http://www.forabodiesonly.com/mopar/...d.php?t=166022