400ex carb on a 300ex

[440exking]

Will a 400 ex carb fit on a 300ex cause im putting a 450 carb on my 400 and was wondering what u have 2 do to put the 400 carb on the 300ex,and how much power it will add. Its got exhaust and a kandn filter.

[2muchquad]

it will fit on the stock 300ex carb boot.the airbox boot takes some tweaking but it will fit,heat it up if you have to.i did mine th same time i did a few other motor mods so im not sure how it does by itself