These are the turbos we offer in our 3800 turbo kits. The 6262 is what comes with our Z3/Z7 turbo kit, and the T67 is what comes in our Stattama turbo kit.  Horsepower numbers are hard to say as they are determined by a lot of things like mods, customers fuel, but the 6262 is capable of 450whp on 93, and 550whp on race fuel, and the T67 500whp on 93 and 600whp on race fuel.  This assumes the customer has a free flowing exhaust, good fuel, a ST5 camshaft, 136+ lb valve springs, ZZP HV3 and NA upper/lower intake, front and rear turbo Power logs, etc.

Model:

6262 
62mm CEA billet 2618 compressor wheel
E Comp cover (3" inlet and 2" outlet)
62mm 76 trim turbine wheel
T3 .63AR with v-band outlet
Journal bearing

T67
67mm E comp cover (3" inlet and 2" outlet)
P trim turbine wheel
T4 tangential housing with .68AR
Journal bearing