Yz 400f next step

Hi guys I know the bike is a lot older then most but I love it and have done a ton to the bike over the last few years . Now I feel like it's time for the next step the mod list is as follows stage 2 hot cams hi compression piston / gaskets and a stroker crank I am just wondering if the motor would except at 426 jug and piston and a newer 450 carb any help would be awesome IMG_1472321665.057385.jpg

FCR/MX carb with the 2008 upgrades is all you need.

What do you mean 08 upgrades ?

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