 The "2UR-GSE" is derived from the Lexus UR-series V8 engines, which debuted as the "1UR-FSE" on the 2007 Lexus LS 460.Of the UR-series V8s, the "2UR-GSE" is most closely related to the "2UR-FSE" used in the 2008 LS 600h.It features the same bore and stroke dimensions (3.70 in x 3.52).