My 1977 M880 is running 20+ year old tires on the stock rims (16.5 in dia). The tires are dry rotting and I want to replace with newer. I like the look of the stock rims so I'm trying to find similar all terrain tires in the 16.5 inch diameter. I would really like to go with the HMMWV tires that are in plentiful supply, 37/12.5 R 16.5. My question is: has anybody else done this on their stock M880 style Power wagon without body lift mods? Thanks for any input!