I have the parts laying around and am considering building what I would consider the ultimate vintage mountain sled. I am planning on using the undercarriage from a panther to get the large track footprint. I would like to go with the 74-75 panther undercarriage/track. I would like to put this on an early 70's Puma. Maybe add in some mods to get the back end up a little and get put a tunnel extension on just to make it look mean. Then put some extra wide, high flotation skis on the front. Has anybody else done anything like this?