Panther pump is going to kill resale value unless its dialed in ,most are not .if the 460 is the late king cobra 9 to 1 people get a little giddy on those .could bring 1500-2k .
You will have to go into the pump and see how the impeller and wear ring look ,and the gap between the hull top cap and transom looks dicey from pics ,could be 3000 parted won't bring over 4500 looking running like it just rolled off the showroom floor .
Need to peek in spark plug hole and see if you see trw flat tops .look for roller cam ,thermactor bumps machined out of exhaust ports .without any or all of those , they didn't try ,and its likely under 300 hp .and its a panther pump