There's nothing really collectible or anything about a 95. Unless it is a zr1, and then you should just keep it. C4's in general aren't exactly sought after, and most vettes are garage queens so finding a clean one isn't really that hard.
As far as forums, your best bet for the bulk of enthusiasts is probably at
corvetteforum
I would suggest your best marketing plan is most likely to park it at a busy intersection or car show. Something like that might get an old guy to splurge on a nice summer day.
Otherwise just auction it - BAT or eBay.