You just described my 4WD Ford F-350 Crew Cab PU! IT's a 1985 with only 90K miles on it, but has a thirsty 460 Big block motor and 4 on-the-floor!
Any ways, if your looking for a cheap trailer, try Harbor Freight. I've seen a small trailer go for $150 new on a blow-out sale with a 20% discount coupon. Although you might get the same wheels we use for our yak carts!