Well, I thought someone would answer. Since I have boxes of parts for those, and did lots of jetting changes on more bike than I can count I'll at least try.
I would try them out on a known bike that is good, in other words on similar LeMans or Cali. Jet them the same way as ones they are substituting and see how they work. You may have to build up what is missing by the holes, threads should make no difference if you are not screwing anything on to the back. If putting on K&N's the rubber may interfere w/holes like they are.
Thanks Pressureangle got to it before me