I'd get the 87 performance unless you know your going to be towing really heavy stuff. 2000# for the ATV's and gear should not be a problem with your truck. That load even a ranger can do easy, if your going to need a tow tune it'll be for towing 4000+ often (IMO). I've read a few threads here that discuss weights but I dont remember which ones so maybe someone else will jump in
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On saving it to your computer, I dont have a clue but I think it would be a really good idea. lol