Jason @ Fiberglass Fixation without a doubt does the best work in the area. He builds parts for MB, tunnel race boats, composite speaker enclosures...(Tidalaudio.com)... 209-569-0763
We use Benny's in Tracy. He does the best work that we have found so far. I would not say we have used everyone so I dont know much about the others posted. If we find some one better we will switch but so far Benny's gets the nod.