I built a trans over the weekend , 2003 LB7, stock turbo, EFI tunned with a lift pump and 500 hp tune . We opted top go with the "ML" prescision converter . I must say after driving the truck it is my favorite converter i have driven so far , I was really impressed,the general feel of the way the truck drove was great, much better than stock. The stall seemed perfect for that truck , turbo spooled easy and the converter lock up was way smoother than the suncoast converters i have owned / installed . My hats off to Prescision because there converter is very well put together