Try the Best Sources for Savage Parts thread in the Technical Corner.  If you have questions regarding something there, post it in the Rubber Side Down with a link or quote.  If you have a resource to add that isn't already there, please add it.  If you're just looking for main jets, many HD dealers have them.  They use Mikuni carbs too.  Just call and ask for large round Mikuni main jets by whichever size you want.

Rob

Downtown Harley Davidson in Tukwila. Ask for Doug in parts, he rides a big Drifter, loves the Savage, really loves rubbing HD's nose in it. Tell him Jeff from Bent Bike sent you to him.  Don't waste the gas coming to my shop for motor parts. Filters, sure, oil, sure, tires, definitely. Can't touch our prices on customizing stuff or tires (bring me the wheel, mounting is free, balancing $8 bucks per wheel, IF it takes weights, just have to buy tire from me). Boss is off Wed and Thurs, drop in, I'll try and cut you deals on stuff.
-WD