Question About my 2002 sierra?

[USB]

Hi everyone,I want get some good comp cams for my truck,where should I get them from.

Specs:Model:2002.
Engine:4.8 Vortec.
Transmission:4L60E with 26-4L60E-HD2
TransGO Reprogramming Kit,swaped to Corvete Servos.
Custom Exhaust system.
Summit Racing Air Filter kit.