Just thought some of you folks would want to know- I emailed Hayden to see if they offer an HD fan clutch with a shorter 'jag' style shaft. Apparently they've been looking into this because they've gotten plenty of inquiries from Mopar folks, since their commonly used 2765 jag clutch isn't rated to spin a heavier steel fan (they were designed for plastic jag fans.) Turns out the gentleman whom I've been in contact with at Hayden had the engineers make up several protoypes of the 2747 clutch with the 2765 shaft. Hopefully they will go into full production. He said the total height was ~2.8". He ended up sending me one to try out. I'll post some pictures when I get it installed. If you guys are interested in such a product, I recommend you email or call them. They don't have a part number yet because they've only made a few, but I'm sure getting emails/calls from folks who would buy such a product would speed up the process.