Those were made by Collectables Corner . I believe they were part of sets for diecast shows in the western U.S. Most Gold Quests were only made in editions of 5 or less .. The regular cars were usually a chromallusion color .. - usually made in quantities of less than 50 ..
A pic of some of my regulars here ..
Ralph is a customiser who makes the cars that Jeremy from collectablescorner1 sells at his events and at events like Autofest. Ralph does very nice work on his code 3 cars. If he does 50 cars he usually does 5 with gold accents and 5 with green accents. Here is a pic with some of them in it. Ralph's code 3s are some of my favorite cars.