Lovely on the inside too! Several years ago gunsmith Ron Long advertised that he would do these conversions, I think the price then was something like $2500.
By todays standards 2,500 U.S. Bucks is cheap. It's not just a case of making a tang with DST's on it. There have to be considerable modifications made to the action and to the sear bar, not to mention the stock.
Whilst the Zischang design of DST's is excellent, looking at the attachment of these to the rifle action and wooden butstock leaves a lot to be desired. The front end of the DST's is attached to the action by a metal pin, but the rear end of the DST's are simply held in place by a woodscrew. Not the best of engineering practice or ideas.
Wood can 'move' with changes in temperature and humidity. It would have been far better if A.O.Zischang had found a slightly more positive way of attaching his lower tang DST's than the method he used.
Harry