Welcome to cobra ownership! First I would reccomend joing the northern california shelby club (
www.norcal-saac.org) - the largest regional shelby club after the national club which happens to be centered around san jose. They have a yahoo group for members with questions. Your quest luckily is a relavtively simple one. I was just talking with a csx4000 owner the other week end who has been using a shop in campbell, but I can not remember its name.
Have fun and good luck
John(;-)