Exhaust, Headers, Cam Questions

[C6CLAYTON]

I currently own a 2005 SUT with 78,000 miles. I have had a lot of good times and recently thought about selling. Its black on black with all the options, 20" chrome wheels and 35" mud grapplers. The body is not in the best shape so I have been asking $21,000. With no buyers out there here is what I am considering.

Long Tube Headers
Exhaust
Aftermarket Cam
Torque Converter

Does anyone have experience with these mods? Am I crazy? I have had many corvettes with these mods and had no troubles.

Also is there anyone in the Oklahoma-North Texas area capable of this work

All info is appreciated!!