I agree that the 30s will have plenty of power and sound great but I'm not sure if they would fit. They are longer than the FXs. It would be close if they did. Another Plus for the Saitos is that they are a little lighter when you include the 2 stroke muffler.

I'm planning on using 9.5x4.5 on my FX .25s. at least at first. Plenty of thrust and a more reasonable (for me) top speed of around 70.

Cappie, are you planning in the cowl mufflers?

Bill