Pickups are easy and everywhere. Anything with fuel injection is new enough to suit me. I don't need 4x4 and won't pay extra for it. The downside is they require truck tags, which are twice as much as car tags. Plus, a pickup is sort of redundant when I already own one.
I thought about a Bronco, but they are too short to handle towing such a heavy trailer without getting squirrely.
Expeditions are out there in enough numbers there are some cheap ones with a lot of miles on them. I don't know much about them or their ills other than they share the plug-spitting Triton engines the pickups have. At a glance, they seem to be a F150 underneath. I'm not sure the interior could hold all the crap I take to the track, as I fill up the bed on the Slick (under the tarp) completely with multiple spare tires, toolboxes, fuel jugs, etc.
The Excursion could certainly handle the task (looks to be built on the Super Duty chassis) but they are a) huge and b) not so plentiful in my pathetic bargain-bin price range. Same plug vomiting engines (aside from the diesel, which I can't afford).
I did consider a Econoline but I just can't picture myself wanting to drive it. Ever. Vans just don't do it for me regardless of how practical they may be for my needs.
I wouldn't want to spend more than 3 grand for any of these choices as, aside from the towing chores, really is just a beater vehicle for when the weather is too poor to use the Slick. I could just get a car, but that would be boring.
I figure 150,000 - 200,000 on the odo is ok, and a bunch of cosmetic issues won't matter. No serious rust, mostly because if the body is rotten I expect the brake and fuel lines to be close behind. The object isn't to have another money pit; the Slick is already one. 
So tell me what is good and bad about these vehicles so I don't get talked into a Suburban like my other racing buddy insists I should get.
. I know we are pro ford here and lord knows I am a Ford guy but if this is a daily driver I would look at the E150's if you even consider an Econoline .Also the E250 with a 5.4 gets 12-13MPG on a good day the 1500 with a 4.3 averages 15-17 mpg and theres no noticeable differance in get up and go ability between the 2 .