Yes, sir, you did send it and two other kits most generously for Craig - he built the Lindberg 571 boat and it sits in a place of honor at his dad's house. You've seen the Gato, and he's probably going to build Belfast for the IPMS Eagle Squadron show in Cary NC next May.
My Lindberg 571 got rescued from the local flea market a year or two back (the vendor threw it in with a Revell 4-stacker), and yes indeed it is the Grayback project. Just some very quick and dirty calculations indicate that the overall dimensions are almost dead solid perfect for Grayback , and from here the sail is also almost perfect, but the biggest problems (IMHO)will be that weird deck on the kit and the distinctive SSG bow. OTOH, Barney is not all that far from being finished, so I need to make sure that gets done first.
Also, speaking of your S-37 - I have a set of plans for the old Ideal wooden kit from the 30s! I know you've probably got some serious reference material there, but if you'd like them just say the word!