I'm not a guru but I've had my Z for 14 years: '92 Charcoal Pearl 2+2 converted to TT by Brett Ramey & Silvertwin; JWT Intake/ECU, HKS Exhaust, Hi-flow Cats, Underdrive Pulley, RPS Flywheel w/RPS Street Clutch, Aluminum Driveshaft, Silvertwin Shifter.