I'm sorry his name is David Hemenway, Englewood CO and ph# is 303-707-5579. he may be able to help you with parts also or put you in contact with someone. Try
www.arizonaparts.com as that's where I got some sunroof parts from but it was many years ago.
I used his reproduction seals on my old 1973 SpaceDuster340 and he also sold me a good used rear weatherstripping.
Make sure your drain tubes are in good shape and exit out the bottom as they handle any small leakage. I don't think Chrysler/ASC made the sunroof to be totally leak proof hence the drain tubes.
Good luck and you can always PM me, Brian