I've been going through the same thing with my 73 Barracuda. Picked it up incredibly original but in need of a major refresh so even if I replace parts with correct looking parts, some are definitely going to be reproduction. I've swapped to 15" rallyes, but still have the original 14". I have 72 bumpers but will be keeping the 73's with bumper guards. I've got an original Tuff Wheel but will be keeping the original, etc. etc. So it will be 'stock looking' more than stock, but could be easily returned to stock if needed. Its your car right now, enjoy it.
Later, Jim