I think SAR knows you can out lawyer them and I would imagine that is the last thing a shop struggling w cashflow wants to do. Not that I think it will come to it, because you sent them a chunk of change. But you also have one other card here SAR should be concerned about. 51k views on your build thread. Once it's on the internet it's there forever. Imagine if you started a thread on some of the other forums that specialize in your car? -- one example
http://www.automotiveforums.com has 679k members!
I'd imagine that would put a dent in SARs business ultimately...