i didnt know whether to put this in the good/bad guys thread or not. i just thought i would update. i purchased a sp12a from this fellow and ive now put 2500 miles on it. its running great. not a single problem to speak of. makes good power too. i saw where he wanted to start building engines to order, and if indeed he does, i encourage anyone to by from him. good to do business with and good quality product.