Tough to be competitive with Stinger in AutoX. In stock Street,
3.3T runs in FStreet. Our local SCCA region events here always have a whole gaggle of SS 1LE's running. Against them, Stinger has no chance.
We currently run our GT-Line in Street Touring Hatch, Against VW GTIs that weight 500+lbs lighter and WRXs with AWD. Basically hopelessly outclassed.
So, if you want to compete, pick a different roller.
We do AutoX and track days to practice HPDE, not to compete. For that, Stinger/
G70 have been great for honing skills.
Let me know if there are specifics you want to know.
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For Time Trials, Stingers are Gran Turismo cars, not factory track weapons, so will need some track prep to survive full-on 20min sessions. Track Sprint would be better for starters, as you only do 1 lap at a time.