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I can't recall a dedicated maintenance HMMWV with a helmet top. In 15 years of service helmet top HMMWVs I've owned or seen have overwhelmingly been leaders vehicles. Not to say they are never maintenance vehicles, but I think it'd be incorrect to associate helmet tops with maintenance or high mileage. There is no widespread correlation between helmet tops and mileage.The slant back is a good compromise, the helmet tops are a bit harder to find and generally have more miles on them, I looked at a couple. I'm assuming because they were mainly used for maintenance and had to travel more to the location of a broken down vehicle or in more convoys than other vehicles. If I could find a decent one I'd take it in a heartbeat.
Welcome to a great site! What city are you in?
Most of ours did. they also provided an enclosed full rear compartment (vs. a slantback) where POL products, tool boxes, and parts could be stored without worrying about the rain or snow or whatever getting on/in them. The side tool boxes often held random tools or minor POL stuff. Straps were also common.Some of the helmet tops had integrated stainless toolboxes on the rear of both sides, that's why I assumed they were used for mobile/convoy maintenance.
That was my WAG on the subject...........(Wild Ass Guess)
The often over looked and ignored logistics guys, well until they want something from us.I see your a loggie, I spent the last 12 years in the USAF on the loggie side.
The first one I got was a helmet top and they were a lot better against rain and wind. Though I always felt that all models that weren't armored were loud.I preferred them as they provided a much better insulator against rain and such for working in the truck. they did get a little loud though. If I were to have one as a long term vehicle again, I'd probably insulate the inside with some dynomat or something.