Well I have the donor engine for my idi swap into the f150 in this thread, http://www.oilburners.net/forums/showthread.php?60366-My-new-idi-project..... Thinking about trying the stock rad with e fans, I think it will do just fine.... Just gonna be mostly a daily driver with some hauling and very light towing.... I've got the matching core support with the diesel rad just incase, But I'm gonna give it a shot and see how it does.. I dont think it'll have any issues. Thoughts?