The best solution is to contact a local
sailmaker and have them built for your
boat. IF that is not within the
budget, then used
sails must be sourced.
You will need to have the rig dimensions, best actually measured on your own
boat, next best from data files. Armed with these numbers, peruse the used sail brokers (Google for a good list).
Headsails are pretty easy to find, mains that will
work without modifications are more difficult, but folks like Bacon and Minney's have large inventories. Sometimes it is fiscally reasonable to buy a used main that requires modification, but unless you can do this yourself the costs can rise dramatically.
Good luck in your search.
Jim