When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Post in the C6 Vettes for Sale/Wanted forum. Use "WTT" for the first 3 letters of the title of your thread.
Be sure to specify that you want a C6 Z06, including any colors that are in or out of your consideration, and perhaps a range of model years. Of course, also be sure to describe your car, pics would help.
Also be sure to include an asking price for your car. That's required, even for a trade.
Your ad looks good. I should have told you that some potential buyers might want pics. What many forum members do is to post in the ad that if anyone wants pics of your car, they should sent you their email address by PM so you can send them some pics. Hopefully, you have some.
Other sellers have pics on a free website like photobucket, and they post links to those pics in their sales thread.