Well, I read through the DLE manual. The throttle and choke horns are behind the engine. That compulsarily requires the push rods go through the centre of the fuse. Thing is, thats where the tank is in this model. In that config using the 20 in this model is out of question

Its 95ax or 120ax and I am leaning towards the 95 for its lighter weight. With respect to a 4C engine, I have a FS91SII operating on another airplane but it wont have enough power to 3D this airplane. Also, was wondering regarding the YS seties of engines (FZ110S and FZ115 size 4C). The OS FS110A ans OS110A-P are priced similar to the YS FZ 110P except that the YS is fuel injected and pumped. On our field pumped engines do not have a good reputation.

Sorry for meandering, just need to work all the options

Ameyam