Trey, what are the bore diameters on the different jugs?
Have you identified any of the cams yet? Most, but not all, performance cams have numbers stamped into one end of the cam.
Have you measured the stroke of any of the cranks?
Do you have the throttle linkage for the RC Weber manifold?
If you expect to get top dollar, or even use the parts yourself, you must first figure out what you have.
BTW, aluminum rods are best suited for short-term, high output racing applications, as they tend to suffer from fatigue over time.