Hi All

I have been mulling over the engine choice for my mustang. I am installing retracts, flaps and covering with monocote. I did replace the 1/16 sheeting to 3/32 to increase strength. From what I have read the 120 4C is alittle too much engine. I am kind of split between the Saito 1.00 and the OS 91FX two stroke. I know the two stroke has huge power compaired to the Saito but I like the sound of the four stroke. The thing I am a little worried about is the power to weight ratio, is the Saito strong enough?

Can I install the OS 91FX inverted with the slimline inverted pitts muffler, has any one done this? I wanted to do the same with the Saito 1.00, inverted with the slimline pitts inverted.

I am esimating my final weight to in the 8 to 9 lb range. I am not really sure on the final weight but it looks to be coming in at the suggested range.

Thanks for any advice.
Victor55ca