Hi Welcome from Mass! Like stated pictures help, without them everything is based on what you stated so far! The M275 was early Deuce Tractors, and not as many made, compared to the M35! The bed if you need it does matter, is it a M105 trailer bed or a cut down M35 bed, either way it will haul less than an M35 I'm sure. But being shorter it will be easier to maneuver! As for the SPARG's well the Army got rid of them for a reason! You have to be careful when backing, it can be damaged real easy, the engage when the rear wheels slip, so no way to put the front Wheels in lock at your choice! There are kits to convert them over to an air shift but rare as well. But like any MV, depending on price condition and your maintenance skills, it's all about what you would like. Parts are everywhere for the most part!
Good Luck!