Based on earlier discussions on another forum with droptop, the TSIs probably kick you out of the "class" regimen. At SCCA, you could run SSP and guarantee yourself a trophy... The underdrive pulley is also a no-no in CSP.
altiain can probably comment better on the class fitment/non-fitment of the rest, but CSP is probably the best place to be. I think the flywheel is a problem in the new STS2 class, but you can take a look at the STS rules and see what you think.