640HP with this completely drop-in turbo:
The Drop-In turbo options for your 2001-2004 GM diesel Duramax are generally limited to about 600 RWHP. Finally there is an option to take your truck that little bit extra without sacrificing drive-ability.
The new Stealth 64 G2 is a direct replacement for your stock turbo. It requires no additional hardware, pedestal, coolant line re-route or anything else. Utilize your factory down pipe and retain a completely stock appearing turbo.
Stealth 64 G2 Unique Features: