cheap 4x4 beater toy!

[Stingray42]

so after burying my western, very clean 94 blazer (2door fullsize) in a farmers field i decided not to do anymore hardcore wheeling with it in fear of breaking something, or paint/body damage on my daily driver.
What I would like to find is an

81-87 chev/GMC fullsize reg cab longbox (dont want to kill a short box lol)
4x4
1/2 or 3/4 ton
paint faded/rough, rust dont matter (i'm going to paint it flat black with a brush for easy fixes)
pull out carpets/ and anything that will be wrecked by water or mud except dash and seat and so i can hose it out (bedliner floor prob)
block lift a couple inches (what is the correct/cheap way to lift the front of these trucks? i know blocks are bad)
meaty tires (cheap tho, like RoughRider M+S (from canadian tire)

for an all out beater that i can cover in 6 inches of mud and leave it lol, i will be parking it somewhere other than my driveway (dad will kill me if i get the driveway all mud lol) forest pinstriping will be no worry, dents, whatever!

how much should I expect to pay for such a rig, and where is gonan be agood place to find one?

thanks!