there's a huge can of expensive worms that'd be opened that way.

stock turbos are not optimized for racing. turbos, and their optimization, are an added cost. add to that the full ST(U) engine build allowance and you have a seriously costly playground - and for what purpose? if the sequential gearbox cat weren't already out of the bag, I would think that should be illegal, too, and for the same reason.

I can see you issue with the S2000 - you don't think it will shed enough weight to make the 2.0L min (2200#). out of curiosity - how much power do you think it can make, full build? becasue I figure that to be one of the best 2.0L motors available, period. yeah, it's a shame the car is heavy, but you could change the lump or the car to make it work. eventually, if you go 10/10ths, Id ask for that combo to get some sort of help. not sure how that would work (can't loose weight) but it's a possible option.