my engine ended up centered based on the header fitment. I have Hooker Super Comps and they are pretty big and take up some room. I did not have to ding them, but torsion bars would have killed me trying to get these to fit. I run a MF system. My goal was to get it closer to center so I could get the passenger valve cover off. Like you said, pick up a set now, and figure out where it will land becuase it will help sort it out.

As for the engine accessories...That's easy, see pic.