I hate to bring this back from the dead but I've very interested in a gtx4088r and gtx 4292r. Does anyone have experience with either of these. I'm new to the diesel stuff but the gtx turbos are killer on the gas cars I deal with. Beside the price the gtx4088r appears to be a killer all around turbo especially to twin over in the future. It should spool up like a 62-63mm and make the power of a 68-70mm. Am I missing anything?