Hello, I would like to upgrade my transmission cooler in my '03 GMC 1500HD.. It has the 6.0L with the 4L80E trans.. I put an aftermarket one in that is a little larger but not fully satisfied with its performance. It has done better than stock, but still want something better. It seems the best cooler is the "Mike L" cooler, but it is for the diesels. I have asked may people and trans shops if it would work with the gas engine trucks, but everyone says they dont know.. So I am going to ask here. Anyone use a Mike L cooler? does anyone know if it would work on a gas truck?