I would go on ebay under completed items and find one as similar as possible. It's worth what someone is willing to pay you for it. Ebay is the best advertising I have ever used. Sold 3 motorcycles, boat, and car on there. All but one I sold over the phone before the auction ended and placed a buy it now. The toy market is a little funky right now but the camaros are doing much better than most.
Vegas69 has the right idea. The pictures suggest that you have a very clean and well kept Camaro. It's better than you might think. Might I suggest the following sites when researching your cars value. You could also list it on some of them if you wanted to put a price out there and let e-bay just ride and see what you get. Also, when I was looking for my car e-bay was a major pain in the butt! I passed on three cars for various reasons and would constantly see cars re-listed because the winning bidder couldn't pay for it.
I just sold my 69 its just been posted on the home page the blue and silver one it was completely done boyd wheels wilwood brakes ls1 6spd its a show stopper its in the new goodguys mag p148. I hate to say the market is soft I got 50K and it wasnt easy it should have done 65 or more i'm betting you would be lucky to get low 40's the way the economy is I'd wait and try this summer maybe something will change good luck.
It's a very nice car, I would say it would bring 30-40k, The cars in the 50k and up bracket are complete custom cars. Not knocking your ride it's nice but I don't think you'll get 50k for it.
It's really hard to look around and see $15k bare steel repro bodies...and know you've got a $10k drivetrain....all the labor and more than 2-3X that in mods and a real 1969 car...one that you can drive anywhere....and yet know that mods are basically worth less than half of what you paid for them....and your labor is worthless.....
I'm so torn on the thought of actually letting this one go...even though I have a '73 Z/28 Pro touring project waiting on me to do something.....