did the 3rd gen z28 run through 92?and look at this car http://dallas.craigslist.org/dal/cto/1262084128.html he says it has a b47 code?its an 88 but i thought the iroc z was b4z and also the paint doesnt match and the iroc z sticker doesnt match and the interior looks like its from an earlier model berlinetta. i dont think it is but any help would be appreciated thnx