If you can get it to this guy, he does good work for fair prices. Has done hundreds if not thousands of dollars in machine work for me and everything's been professional. His name's pete and you can tell him Silas with the hondas sent you. (might get you a friendlier price)
Don't know this for sure, but you should try Harry at Supermoto Engineering. He has a full machine shop and they do commercial non motorsports fab stuff, but I would bet he could do it and they're in San Carlos