There was an OE (not homemade) camper on that chassis, down the road from me for a # of years. Didn't confirm the engine in it, but unlikely it was a 'yoda V6.Anyone remember the small Toyota dually, build of the pre-tacoma truck, used by Uhaul. 2.4L 4 cylinder. I think its rated for 87 hp?View attachment 4093915
Popular truck, in other applications, but for "dually" loads, it needed a Tdiesel..... likely common elsewhere.
Rgds, D.