RE: Which .60 size warbird???
Ya, Winner R/C has lots of World Models, the GeeBee-Y and Tiger Moth are from Pacific Aero Models. The Hangar-9 models are listed as such.
If you want to go G.S. war bird, the World P-51 and the ZERO is a good way to go, I don't know much about the G.S. Spitfire.
I have two W.M. P-51's with Saito 180's in them, my friend has the ZERO with a Zen. G-38 with smoke and it's a great combo and even with the extra weight of the gas engine and the smoke system the factory landing gear holds up but it is very easy to install SpringAir 404 gear with oleo's in it, thats what I have in my W.M. P-51 "Ridge Runner".
You will want to look at the Top Flite P-51 ARF also, and it's a little bigger.