Johnny, have you been studying on your big blocks? Heh sounds like it, your helping people out left and right these days. Looks like you are knowing more about these big blocks! I wish I knew that much on them, like I don't know how to change compression by changing the heads, etc and know what heads will change the compression to 9:1, etc. Your one smart guy that's all I gotta say. But anyways, if you don't pull that engine you will have problems with working on it and wish you did pull it in the end. It may seem like a pain in the ass or something but if you don't do it then wait until you can't get to something and you spend 30 minutes figuring out what to use to get to that bolt or nut or whatever it is. Also you will know what the pistons are and then learn more too while your at it. Now if your a big hot rodder and like to learn more then that's the way to go IMO.
Good luck man!