Will a stock 2001 Yamaha 426 carb bolt up to a 400ex?

What kind of performance would I gain?

How hard would it be to install?

Thanks in advance for any info!!!

 

A 426 puts out way more power than a 400ex, almost twice the hp. I am not sure if it will fit becuase of the intake manifold is larger on the 426.If you did get it to fit you would burn gas faster and prob increase in hp alittle(1-4)

 

Thanks for the info