What price to sell my 7g?

I got about 80000 miles on my car but i was thinking about selling to get a truck. It clean inside and out no major or even minor problems. the blue book is like 6000 but how much could i sell it for.Ive never sold a car before so i dont wanna sell it for less than i could have.

Its got 2 1/4 striaght through cutom exhaust, brembo brakes and pads, new 17" Sacchi 260 rims and tires plus my winter rims and tires. rockford fosgate speakers front and rear. leather interior, tinted windows.

Clcik my www to see the pics but anyones opinions would be alot of help.
Thanks.

Around $4000

i guess my otehr option is to buy a new engine and trans. cause i'll hit 100000 by december or so.