I'm trying to do my own research, but not getting much. I got a lot on mistubishi's, thats about it. In building a high revving motor, I'm under the assumption that you build your head, being a more agressive cam, springs, and retainers. Valves too? I donno. If this is wrong, someone correct me now. In this though, what about the bottom end? What kind of changes is need to be made to make sure that the bottom end can keep up, or is this just not a problem? Advice in its strongest form, criticism, whatev it may be. I've got work to do and I need to do it right, but you gotta have the information to do it right, and personally, I don't want to build my car based off a mitsu.