In a past issue of car craft(I think) I remember seeing a picture of a special rear spoiler on the 1st gen camaro that was about 2 inches shorter(lengthwise) than the standard spoiler.It even told the RPO code but I can't find that particular mag or anyone who's even heard of a second spoiler offered for the 1st gen camaro.Anyone remember that or know what I'm referring to? Thanks.  

In 67'& 68' the rear spoilers were 1'inch shorter on each side than the 69' , but i can't tell you if there was a code change for the spoiler if there was one. but yes you are correct on the width , my 67'SS had the shorter spoiler on it .