Designed specifically for the Strange S60 direct bolt-in housing for the 2010-2015 Camaro. Does not include inner stubs. The “Long” and “Short” stub reference is measured from the inner stub bolting flanges on either side of the S60. LONG will measure 17.3? from side to side and SHORT will measure 14.3?. Most S60’s are configured as a “short” stub assembly.