yz426f in a 400ex frame?

[dsheola]

Anyone put a yz426f motor in a 400ex frame? I know i'll need some custom motor mounts, and airbox and exhaust.
How hard is it?
Should I do it or build a 416ex, 426ex, 440ex instead?
this will be a MX quad

all input is appreciated

[LSRyfz426]

I have a 426 in a complete Lonestar chassis. I can probably sell you this for what it would cost you to put the motor in the stock 400 frame. PM if interested.

[roostin_dale]

do a crf450 conversion instead...416exmx did a write-up on it in the F.A.Q. section

[dsheola]

pm-ed you