Swanny

I am looking for information regarding a model of Chevy truck from a specific year, 1988. What I am looking for is specs for the Chevy "Rat" that was sold as a stepside. If you check out this link http://www.cardomain.com/ride/390853...0-regular-cab/ you can see that I really am not making this up. This is the only one I have seen other than the one my father owned (which was a different color, white). I am looking for anyone that can give me some information about it (how many were made? Vin # specifications, etc). I have googled, bing'd, and done just about everything that I could think of, including searching this forum before posting, to try and find some information that could lead me to either a) purchase one or b) recreate it.

Thanks in advance!