Most of the time, the guy who comes up to an obstacle and gives it too much gas is a guy who is new to wheeling, and hasn't yet learned about how lower speed means more control and fewer broken parts.
When it comes to an affordable build platform it's hard to beat the '87-'95 Jeep Wrangler YJ. The sturdy little leaf-sprung Jeep's stout frame and cheap price make it a garage builder's best friend.