This listing cover model years 1963, 1964, and 1965 Riviera’s. This listing does NOT cover a 1965 Buick Gran Sport. For that listing refer to listing 568810.
- Dual exhaust system includes LS/RS exhaust pipes, LS/RS resonators, LS/RS connector pipes (AKA over-axle pipes), single transverse muffler and LS/RS tailpipes.
- System starts out at 2″OD, increases to 2¼”OD on the connector pipes, then reduces down to 1¾”on the tailpipes.