GSC P-D Porsche GT3 Cup 996/997 Intake/Exhaust Valve Guide Standard Style +.001in OD - Single - 3997.001-1

GSC P-D GM LS7 Manganese Bronze Intake/Exhaust Valve Guide +.003in Oversize OD - Single - 3082.003-1

GSC P-D GM 1.95in L x .341in ID x .5022in OD Manganese Bronze Intake/Exhaust Valve Guide - SET OF 8 - 3077-8

GSC P-D Toyota G16E +.003in Oversize OD Manganese Bronze Intake Valve Guide Stopper Style - Single - 3146.003-1

GSC P-D Porsche 944 Turbo Intake Valve Guide Standard Style +.003in Oversize OD - Single - 3084.003-1