Kermit - Actually, the powdercoating does sound like a good Idea - I will look into it tomorrow when the plenums are supposedly finished.
Part of this whole installation by neccesity is a new airscoop. The old Mondial sidescoop had been trimmed to accept a rubber duct to attach to a stock 308 airbox. Well, upon disassembly of the starboard side scoop, it has a smaller intake opening and is more complicated than you may think. The intake scoop opening itself is only about 1/3 of the total scoop area or less, about 4" x 3", with other air being ferreted off to cool in front of the front cylinder head and around the vapor recovery cannister. The big discovery for me was that the airscoop has a built in resonance chamber at the bottom of the airflow tract vented by two holes.
I removed the air induction piece and the rear vapor recovery scoop and replaced with an aluminum duct that points towards the two K&N filters for the plenums. It is simple, robust, well ventilated the filters once the car is moving and also blows cool air on the carbs in the engine V. I may be overselling the carb cooling thing I realize, but my gut reaction is that it will help on hot Texas days.
Will post some plenum photos tomorrow.
