Unless you can find that one special buyer, best to return car to stock for highest tradein and sell the bits separately. I am assuming you are not getting into another SHO or a vehicle that can use the same bits.
A certified 2015 w PP would go for around 34K at the dealer, so assume at least 10% less in tradein value. Private party may pay maybe $32K, if all service records are available and the vehicle is in pristine condition.