Ron - cams in STL get more lift AND less weight if they only push 1 valve per cycle (there are rules for 2/3/4+ valve setups). It's a blanket allowance, not based on the shape of the motor, just like TB, intake, and head design are all "equalized" in the rules (by which I mean ignored for effects on overall power potential).

I think they could work something into the STU rules for 2V "equivalency", published or not (STAC: we'd all prefer to see it) that will take this into acount. Just like in IT, the best you can hope for is grouping, not bullseye.