I have a 1978 Honda CB550k that im about to do a top end rebuild on, and was wondering about the possibility of not removing the engine to do it. My main question is if i have to remove the studs in order to get the cylinder block off. I ask because i don't want to risk breaking any of the studs if i don't have too. Also, any general tips from people who have done this before would be greatly appreciated since this will be my first time rebuilding a motorcycle engine. I plan on replacing piston rings, re-honing the cylinders, all new gaskets and seals of course, valve job, and probably valve guides as well. If theres anything else i should replace then please let me know!