Hello oldprogger - I don't know the exact lock I bought, only that it was one of their cap-lock Hawken plates/locks. What I did was to strip the TC lock down to it's plate and match it against the lock plates in the track catalog. This was possible as the pictures are scale. I found a plate that was almost exactly the same as the TC plate, needing only minor filing. I bought the lock from them and then purchased the Bedford County percussion hammer as it had almost exactly the right 'throw'. I filed the plate out for the TC bolster and inlet the lock parts- done. Oh yeah- I had to turn the nose of the hammer in a tich to hit the nipple properly. This I did cold. DONE - maybe 1hr's work altogether. I got a really good edge on my "inletting" screwdrivers this time, so it went quickly.
(Taylor's orders, of course) Agasint his orders, I might have used my B&D Dremel as well? I don't remember exactly.