what if i put a YS 63 on the ultimate bipe? the nose weight will reduce and so will the overall weight. Moreover, the YS63 puts out substantially more HP than the os70 does. Any comments on this plan?

What about a 91fx? the os70 is 20.3 oz and the 91fx is 19.3 oz...so basically we are getting more power and reduced weight.

anurag