>>If you're looking for a newer C30, and frankly, a 1991 is a newer boat, then your choices are more limited, as you are getting nearer to the end of the model run, and production had certainly tapered off by then.
For some reason I thought the C30 Mk III was in production until ~2000 when the C-310 was unveiled.
Personally, I think the C34 is a nice alternative to a newer C-30. It has a more modern design and with the tall rig a really nice sail plan.
I have replaced bulkheads in two C-27s and helped a friend replace all of his bulkheads in a C-30. The C-30 was actually an easier job to do because the beam is significantly wider equating to more working space. It's not a tremendously challenging job skill wise, it's just time consuming and requires a significant logistics for acquiring the lumber, removing the old bulkhead (lots of screws), cutting the new one, installing, chain plate holes etc... lots of good times. :-)
Back Creek, Annapolis