Global Motors, Stafford. If you press him, he will tell you the engine is from an S4, so it is not a GTS. Did not answer the question of how many miles on the S4 engine. There are other problems, like oil leaks. Which means they installed it right off the crate. Has been on ebay at least 3 times. IIRC it did reach its reserve once and the buyer backed out. BBeware.