I am currently building the Top-Flite T-34 and powering it with a DLE20-RA. I installed the engine inverted but of course that created other issues. As my plane will have fixed landing gear, I had to move the nose gear back nearly to the firewall. Also, the throttle and choke linkages will need a little engineering to get acceptable results. Keep in mind if you want to operate the choke with a servo, add an optical kill switch and flaps, you will need 7 channels on your radio. All said, if I had to do it over, I would probably choose a 4 stroke glow engine, mounted sideways. Hope this helps.
DaveB