would these fit my car?

[Larry Herman]

Sorry Mike, but they are the exact opposite of what you want for your car.  The hot setup for stock fenders is 8x17 in the front (23mm neg offset) and 9x17 in the back (15mm neg offset).  Any more neg offset on the 9s and your tires will rub on the trailing arm bolts.

BTW all SCs and Carreras have the same hubs F&R and run the same wheels, including the 87-89 G50 cars.