The plenum area will be near the same size and volume as the stock 1 BBL intake, being only slightly wider where the carb sits on it. I don't like having to bolt a plate to the intake to then bolt a carb to it, I feel they should be bolted directly to the intake. As for heated, yes, I plan to have a water cavity with a removable lid on the underside to allow for that option. Thanks for your interest!
