I Guys , I also own one of these 1981 contract trailers , my trailer served with 1 Canadian Signals Regt. out of CFB Kingston these were produced by Manac out of Quebec, surge brakes , produced to replace the M-101/101A1 3/4 ton trailers with the M-37 wheels and brakes , I see on the first one someone has replaced the 76 5/4 ton 16.5 rims and tires with 16's from the CUCV, the trailers were equipped with features for Germany , triangle reflectors mud flaps , I have never seen one so rusty,