I'd suggest gathering people an friends with some tools/beers/food at your house.
Have an engine pull and clutch party.
Stay away from Excessive Performance in Killeen
Stay away from RTR in harker heights
Deep stage does good work.
But from experience the best way is to learn and work on your own. Cause the shops around here blow donkey d**k
Call billy. He's subaru master tech in austin. I heard he's a great guy and builder. (512) 635-3316