Max size increase?

[mikeboone]

I need informative replies about the 400ex. I plan to bore the motor a bigger size and wanted to see the max size i can go with the stock liner. I was thinking a 416 but if anyone knows please reply--thanks

[Chef]

you can go to a 426, but the sleeve gets dangerously thin i think

["BLAHH"300!!]

FROM STOCK HOW FAR UP CAN I GO LIKE THIS ON A
300EX