RE: World Models T-34 Mentor
Ditto on the thumbs.
I've built eight or nine of these things, usta race them and built a couple for club members.
All had OS46FX engines but one and that had a OS50FX.
The T-34 is cheap, well built and the transparent cowl makes cutting "accurate" holes for the muffler and needle valve in the fiberglass cowl a breeze.
I flew one at Red Bluff one year on floats, cool.