I think it would be too much. I have the Saito 180 which is the same size and a little more power than the 150. I also have the OS 120. On the Ultimate I am building I will put in the 120. The Saito 180 and the Saito 150 are both great motors but way too much viberation for this size frame. I have had the 120 in the Cermark Pitts and that was just a great combination.

tonyc