I cant see the pics but by reading the description it sounds like its underpriced.
Fiberglass bodies run $4,000+ then there is all the body work required to get them to fit right.
C6 is a nice upgrade
New Paint (from who/where)?
Lots of other nice upgrades - gears, seats, liner, misc engine upgrades.
The average builder could have more than $7,000 just in the body and paint - something's not adding up for me (but again, I can't see the pics)
I don't get it - sounds too good to be true... Id ask a lot of questions before heading down - then REALLY check it out.
Some things I'd want to know:
Age of the body - brand, etc
When was the truck built
More info on drivetrain - status of engine, trans, t-case, axles
More info on the new paint job - is it a cover up or a nice job?
That should give you an idea of how well built this thing is.
The rest will come down to an inspection. Are you close? If not, maybe a local guy on this site can check it out for you.