The guy I bought it from said LMS Racing in Michigan built it. I dont know if they did the porting or if FTZ did. He said the pipe was $740. LMS RACING is also engraved on the cylinder. The jug has been milled at some point instead of going back with thicker base gasket I went with custom cometic copper thick head gasket. I can live video chat so who ever can see and hear it run and what not. Located in Arkansas