The 2nd Kellison Stallion built was sold to Linda Carter (actress who played Wonder Woman on television). It's for sale on Ebay:
Replica Kit Makes Stallion 2 Door Convertible | eBay
SBF and under car exhaust make this unique - whether that makes it more valuable or collectible is quite another question. eBay photos would indicate it needs some TLC and/or restoration.
More on the car:
Kellison Racing