SB:
I am also in SF Bay area, with a 1973 E27.
Had Svendsen's build a new boom last year for about $1,400.
I would recommend trying Hansen's rigging in Alameda, or Ballenger Spars in Santa Cruz.
Also, would you be interesting in buying my c-way boards? See the "Which Varnish" current thread for a photo of the boards.