Friend of mine has a full sized 78 (maybe 79...can't remember) van. Runs a 10 second quarter mile. It's definitely one of the most unbelievable things I've ever seen.
It runs 12.01 with motor, with nitrous added it hits 10s. There are videos of him with his dog riding along during the drags and the dog is barking at the other car the entire trip down the strip.
It would be pretty easy to build that truck, btw. I'm not sure about the rear suspension and I'd really like to see that, but the rest of it practically bolts together.