 Some TPI 1992 Camaros received some of the "leftovers" from its Corvette cousin, which switched from Tuned Port Injection to the new LT1 engine series in 1992.They received the rough texture, cast aluminum style, intake runners from the TPI Corvette instead of the regular Camaro smooth tube ones.In some cases they were built with black painted valve covers instead of the normal silver valve covers.