I don't think "almost all matching" bears any significance. Its a P or F issue, not A B C D F; either matching or non-matching, black or white, import or non-import, etc. Usually the bolt is the mismatched piece on these military bolt rifles, kind of like side plates and barrels on lugers, barrels on P38s, firing pins on Nambus, etc. "Mostly matching" is still falls under the mismatched category.
As others have said, be careful trading such hard to find guns. You may regret it later and have trouble replacing it.
Winchester 73, the TFL user that won the west