Replace crank bearings?
As you may or may not know i have an mxz with a bad engine. Anyways i may be buying a top end if i can get it cheap whether i use it with my bottom end or not im still going to buy it, if i get it for a good price. Well i dont know positively the bearings are bad but im assuming they are cuz the crank had rust on it. Im in the process of cleaning it all up. Can i replace the crank bearings and be good for a top end or no? I know nothing about cranks and bearings and what all needs to be done. If its going to cost a bunch ill just find another crank if i can.. How hard is it to replace the bearings and what all has to be done to the crank while doing that?
Any info would be great..