When I last talked to Tom Amon (Mobil Works West) he really pushed back on even touching anything to do with FI on the 914 .Was happy to install a Carbed 6 though
If you catch John @ Valhalla in Lafayette on a good day (there isnt a lot of them) he may help.
His quoting for 914 work is usually "Buy the Hour"
I haven't checked on their willingness to work on 914s but Pacific Power Motorsports is in Walnut Creek.
What kind of "work" do you think you need ? I have been able to do everything needed with the brain trust found right here.