NOt positive, but IIRC USSpars in Florida may have been the supplier of your mast. A lookup on the internet at usspars.com may be worth it, and if they did supply the mast, get a cost to replace it. OR, talk to a local rigger, they may be able to weld an additional 6" back onto the base. Not "MY" personaly first choice of a fix, ie the welding, but a smaller boat like this may work just fine! This of course is assuming the shrouds and stays are still long enough to handle the extra 6" of mast height.
She drives me boat,
I drives me dinghy!