The only cars allowed to be turboed are:
VW 1.8T
Audi 1.8T
Saab 1.8T
Volvo 1.8T
Subaru WRX
Mazda 323 GTX
(i'm probably leaving out some, but you get the picture)
And of course it has to be factory. And you cannot change boost levels. You can however add an aftermarket LSD, high flow cat (6" from original location), aftermarket clutch, big brake kit, wider wheels (than STS), wider tires, and motor mounts in STX.
And looking at your mods you are already bumped to Street Mod with the removed rear seats.
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