Easy way to make 440 horsepower in a Redline. Keep OEM air filter housing and turbo intake hose. Drop in a K&N air filter. Install DDM or RPM intercooler and DDM charge pipes, Use OEM style spring loaded hose clamps at all connections. Install ZZP ported head with stage 2 cams using ARP studs instead of bolts. Install Opel larger fuel injectors. Use improved one piece timing chain bolt. Trim fusebox steel mounting support to make clearance for turbo. Mount ZFR or Z54 turbo to OEM exhaust manifold and heat shield. Mount the turbo actuator on the right hand shock mount with fabricated bracket and use a cable to attach to turbo bypass valve arm. Keep OEM catalytic converter and exhaust system. Install OEM turbo heat shield. Fabricate bracket to stabilize OEM turbo heat shield. Install GMPP Tmap sensors. Relocate the power Steering reservoir. Install AC Delco 41-108 spark plugs. Get it tuned.