It really depends how bad the rod bearing seized. If the top end was not damaged fine. But since you have to split the cases to get the crank out and replace the rod bearing...the 2 main crank bearing should be replaced too since you are there.I don't think you understand what I'm saying, and some of us have never done this before hence the post on here, the upper rod bearing is fine the lower bearing on connecting rod is bad won't turn very easily, I'm asking if I can get in there and replace the bearing and all the necessary gaskets or is there more required