STOMSKI Racing SR090V2 Improved Version 2. Whether you want to advance or retard cam timing, upgrade cams, or just be able to set with ABSOLUTE precision the cam timing on any of the GT3/GT2 engines, this is the most accurate tool to accomplish those tasks. STOMSKI RACING's GT3 Cam Timing Apparatus provides for absolute accuracy, infinite adjustability, and superb flexibility for all cams and setups. Includes complete fixture with ASME/ANSI certified dial indicators and one (either 12mm or 14mm) TDC Indicator with Travel Gauge (SR092 or SR093). Storage case included. Please specify 12mm (SR093) or 14mm (SR092) when ordering. Both sizes can be included in the kit at additional cost.