Well it looks like I got a bad fourth gear so I am going to be splitting the cases in my 426. My dad used to be a mechanic for Honda, (long ago) and helped rebuild the trans in my shifter kart and he routinely rebuilds his XR so I think it is within our ability. What I wanted to know is if there is anything I need to be aware of. I have the manual which I hear is pretty detailed, but are there little tricks that those of you who have done this can tell me. Is there any special tools that I need, do the cases split easily, etc....? Also how much should I expect to spend on parts? Thanks in advance for all the help.