In the market for a truck...

My uncle had an E 350 van with the 460.

10 MPG empty. 10 MPG fully loaded with books pulling a trailer fully loaded with books.

$2500 will get you a super nice 72-93 Dodge, possibly crew cab unless it's a tricked out power wagon, Macho, LRE, or Warlock.

I had an '82 F-350 dually/flatbed with a 460. 10 mpg empty or loaded. Pulled my brother in laws 48" stock trailer from Houston, Tx. to Shelbyville, Tn. and back with a load of horses. It did drop to 9 1/2 on that trip. Truck before that was an '83 F-350 dually with a diesel. Spicer splitter that split up 25%. 16 mpg any way you wanted to load it.