Thanks, I would like to finalize my decision soon. I would like to do the 5.3L with a t56 but haven't seen anything like it so I thought I would ask. Is the 5.3L rebuildable if it would ever have to be. I think I remember reading that the LS1 is only rebuildable for .005 over or something like that and then that is it. Is this the same with the 5.3L?