Depends on where your WHP and weight are coming in... if you're "competition weight" is above 3300lbs, which is typical for these cars unless heavily stripped, you could tune the car to up to 320 whp and use option 4
... option 4 will allow you to stay TTA, add aero and other mods, and run 275 NT01s (or similar) all the way around... the 20mm smaller tires would give you back a few points and you could spend those along with the remaining 19pts in the class and still stay within TTA
or if you are lighter and running <300 whp, then go with option 1
I don't think options 2 and 3 are going to be relevant to most folks given the challenge of getting down to those kinds of weights...
I have been using option 1... and I was thinking about using option 3 as an alternative setup where I would run lighter and with no aero... no longer relevant given the SC on the way!
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