New shrouds, Nacra-style (loooong) forestay bridle. I don't think the eggshell hulls would be happy with the stress of a short forestay bridle!

I don't know if it's original, but the half-socket on the mast base fits over the ball fine. It's not captive, but I'm tying off the mast base to the dolphin striker (JUST loosely enough) and haven't had a problem yet.

What's your hull number, out of curiosity? I have two sets; #189 and #12. The new sail and tall rig are going to go with #12. Where are you located, too?