See if this is what you want it to do...
http://www.mobile-audio.net/store/customer/product.php?productid=17733&cat=495&page=1
Shows as sold out and cannot be added to cart.
And items that are In Stock do not show how many are available.
Wasn't sure what you meant by sold out page. If this works for what you want, I'll dig around for what I did and hope it works in later versions.