First you'll need a pair of full with 1 tons, with 5.89 gears installed , then you'll need to decide on leaf spring or link suspension. You'll want to stretch the wheelbase , trim the body , custom steering , you'll need some big hp so at a minimum a small block v8 you'll need a beefy trans like a nv4500 or th400 i
just get an atlas 2 t case , and a whole lot of other stuff so basically 10-15k or more.