Are you ready for a serious upgrade for your 7.3 Powerstroke? The factory GTP38 is in for a hurt at any power level above 400RWHP, so once you're running a chip or programmer and added even a mild set of injectors, its being pushed to the limit and well beyond its range of efficiency. While there are a ton of options on the market for turbo upgrades that support higher horsepower levels, few offer the ease of installation and reliability as this 66mm Stage 3 from KC Turbos. Featuring a 66mm Extended Tip Compressor Wheel, 73mm turbine wheel and optional 1.00 or 0.84 A/R Ratio, you'll be impressed at how much air this turbo moves while still giving impeccable street and towing manners. The 1.0 A/R housing option is intended to cool your Exhaust Gas Temperatures (EGT's) above 3000 RPM's. For dedicated tow rigs and daily drivers, the 0.84 A/R housing will provide a quicker spool and cooled EGT's below 3000 RPM's. This turbo includes a big head wastegate to keep your cylinder heads intact when reaching higher boost levels, installation o-rings, and even a new 4" intake boot for a complete installation.