I used to use a guy like that with my Audi.
The only problem with him was that he also owned and ran a semi-pro race team... So of his season was going well, it might be days before he would look at my car.
He had it locked up in his garage for well over a week one time while he was out west somewhere, and I couldn't get ahold of him.
But he did great work for cheap when he was around. But just not reliable enough to trust with a car I now need every day.
Native XWA.Netter (Nutter?)