If you're running an aluminum intake, is it really a good idea to be running exhaust gas through it? Does it actually have a heat riser passage? Unless you've got a heat riser valve on one side, the exhaust gas isn't going to flow under the carb anyway.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!