RE: Moki 2.10 and TF P-51 arf
The Saito 180 hauls around the H-9 P-51 really well. The 2.10 will make the TF a rocket but... If the 2.10 is new you will need lots of run time on the ground before you fly. Personally I would find a highly reliable motor. A 4 stroke is awesome in a warbird! Or a small gas!