Vantage guitars are nice, however, if it isn't actually all original (untouched in complete stock form) then there really isn't any reason to keep it with original parts.
If you can get a tailpiece that fits, it will probably be better quality metal than what was used back when they made the Vantage guitars. You can acquire very nice pickups for not much money that would take the Vantage to much higher levels, as the quality of Vantage (and most Matsumoku brands/guitars) was in the woodworking and assembly - not the pickups. The pickups were one of the weak points so you'd be better off getting a great pickup and installing it in the Vantage.
Having 'period correct' parts in the Vantage won't add value because it won't really be all original. Period correct may add caché to Gibson, Fender or other big brands or rare vintage brands but not to Vantage.
If you have other motivation(s) for seeking the parts then, by all means, disregard my comments.
Best of luck.
Originally Posted by StankNasty
Help Desk