Does any one know if the stock 35.5mm carb off a 400EX will fit on a 300EX. What I want to know is, does the air boot from the air box fit the 35.5mm, and does it fit on the intake of the 300EX? One more question, if everything does fit, what can I expect in performance gains???

 

I have heard this the hot setup for 300EX owners, I don't know if it fits right on or needs an adapter though, but the performance gains are worth it.