This is an awesome turbo for those looking to upgrade their stock truck and are looking for a little more power than stock, but still want to tow with ease, amazing drive ability, and quick spooling. This turbo will not whistle like the powermax/2003 turbos. SPECS: 63.5x88mm single plane billet wheel with extended tips, .72ar race compressor cover, 72.5x66 13 blade turbine wheel, new high flowing billet vanes, stainless steel unison ring, and upgraded 360 thrust bearing. 100% drop in (no modifications required)