TurboWorks Blow Off Adapter Made of solid aluminum CNC method Allows for adaptation of Blitz relief valves to serial intercooler Fits: Nissan Skyline R32 R33 R34 GTST GTR Bolt spacing: 87mm TurboWorks Blow Off Adapter Made from solid aluminum by CNC .Allows adaptation of Blitz-Mounted Relief Valves to stock intercooler Fits: Nissan Skyline R32 R33 R34 GTST GTR Dimensions shown in the last photo in the gallery.