I see mercman posted some pics of 36-37 brake drums, one of the pics appears to be a 36 drum mounted on a 37-39 hub (short snout). This is what I would like to do as my 36 drums are like new and then go to juice brakes. Other than the grooves on the outside are the drums themselves dimensionally the same? I found someone who says he has a set of 2 piece 37 hubs but the drums are junk. Before I travel 3 hours I'd like a little insight. Thanks Keith