Lane....Rick's 1st Gen sells the correct grained spoiler, but it's expensive and their shipping charges are outrageous. According to what I've read, the '68 spoilers were a heavier grained plastic for strength than the '67 or '69s, and didn't use the braces. I'd like a definitive answer to this myself. The later GM NOS replacement spoilers were thinner and slick and needed the braces. You can buy the repro slick spoiler AND braces for about half of what the grained spoiler costs. Hope this helps and good luck!