I have used
The Carburetor Factory in Sacramento in the past. You might call
22reperformance.com in Chico to see if they do it, they have a pretty good reputation so far as engine builders. I would think you could find a shop closer to you, maybe one in Fresno, a search here or on google should turn up some of the through the mail companies. The shop in Sac charges about $30, but I have read here and on other forums where some of the through the mail companies do it for as low as $6/injector, then there is shipping and insurance costs as well.
The last set I did myself using this
Youtube how to, it worked pretty well. I had everything but the harness, so I just made my own. Granted they aren't balanced, but it allowed me to see if they were working correctly, which they were, so just reused them.
