Well, I finally got fed up with the OEM and aftermarket GPR's and ordered a Stancor. Are there any tips or insights or experience that could be offered from the pros, as I get out in the cold and change this unit out yet again. I noticed that it does mount differently from the last three that I've put on. Impossible cold starts until the GPR is replaced...then it's all good . (2003, 7.3 with 81,000)...Thanks.