UPDATE: Still Available. Listed as an MB, the title (shown in a pic on the ad) suggests it is a GPW.
https://www.facebook.com/marketplace/item/2283030172003429/
“This thing is old. The motor is blown and the there is no 3rd gear. It comes with a wiring harness and a racing fuel tank and radiator.”
Also included in purchase price, 30 extra rattle cans of spray paint.