I've heard good things regarding AF1 Racing in San Marcos.
The Austin group of Ducati riders I kept in touch with a few years back all had positive things to say about their shop.
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We use - C63 AMG, Bimmer M3, Mustang GT, Mustang V6, Honda Civic, Ford F-150, Chevy 3500, Honda Fit, Ford Ranger, Dodge Durago, Infiniti FX35, and several variations of Jeeps...
Damn, all class of cars. I'd love to get my M3 out there. Hook me up!!!