Ok, so I have been fighting with my bike trying to figure out why it is running like crap.. I finally figured it out.. I have a blown head gasket.. It never overheated.. I guess just due to age.. But water is mixing with my oil... Mine is a 94 zx7.. Prior to this it ran very well.. So I am not sure what to do.. I have 50k on the clock.. I was thinking of swapping something in fuel injected.. So now would be the time to do it.. I just want to do the right thing... Buy the right engine.. Would a zx9 or zx11 swap right in? Could I reuse my carbs on either if I go that route?