I just got a magazine with a nice article in it about a test in 1973 the magazine did on the m715.The truck was one of several a Jeep Dealer bought ,some were new and in good shape and stored for about 4yrs and was trying to sell for $4995 in '73 but any way here is the pages and I hope they come out , it is a good read,if not I can email
Brian
enjoy