Very good service. They have the best bang for your buck. Always there to give you good service. The owner is very nice and always willing to give you good advise and will order the right parts for you. I've also borrowed some tools from him for free!! A+
I would recommend Sumners to anyone.
Received substandard machining which caused damage to cylinder head and very indifferent and poor attitudes when I brought it to their attention to try and get the damage corrected. In the end, still not satisfied. Fortunately it was the cylinder head from my daily driver antique and not the show car. Would not recommend their services to anyone.