The entrance signage from the former KC Raceway is currently available for auction on Ebay with a starting bid of .99 cents with no reserve.

These are 12'x8' banners that hung on the entrance sign for the past several years. There are two of them available. Not sure of the destiny for the 2nd one as of yet - but 1 is available right now. You can find it on Ebay by searching "KC Raceway".