After much searching, I found it. It was the metal pipe that runs from the carbs to the carbon canister. It was vibrating against the fire wall exactly at the spot where a clamp was missing. That's why the sound appeared to be coming from under the dash. I guess it sort of was under the dash but on the opposite side of the fire wall. Thanks again to all Who contributed solutions to my dilemma.
Hey Guest!
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
