1886/71 win.

I am starting some winchester projects, now have several recievers for the 86 and as of tonight, a 71 reciever. do all the 86 internal parts fit into the 71 action? I have read somewhere that if you have a 71 bolt you are required to us the 71 carrier, but that is all I know about interchangeability. I intend to build a couple of the 86 rifles as original with the 45-90 barrel, and really don't know about the other two that I have-- thinking about building one 86 (or maybe the 71 action) into a .450 Alaskan. Anybody have any experience with that caliber? Thank you for any response.
Mike