Your in California,I would think some of the high profile shops in your area can appraise your car. HRP
Hit up Alan Szarek on here..... Boldventure on here, that's what he does....he is part of a professional appraisal group.
No personal experience, but I've heard very good things about these guys...http://www.motortechappraisals.com/
What do you need the appraisal for? If you need it for insurance ask your agent for a recommendation If you need it to settle an estate try copying a page out of the Old Cars Price Guide and change the value based on condition and improvements. Charlie Stephens