Porsche Cayman Engine Modification and Engine Request
#30472 from Marvin Epps · Rule change · TB 21-07 (2021-07 Fastrack)
In GT2-ST, Porsche Cayman (05-15), change Notes as follows:
"65 75mm Flat Plate Restrictor @ 2700lbs. No variable valve timing and no direct injection. 4.2 70mm flat plat restrictor 2700
lbs."