10 record holder slant worth?

It's been some years, but my buddy's multi-record holding Stock Eliminator car went for mid 20s. That was a pedigreed 71 Mustang Boss 351. I wish you luck, but I don't see a lot of material value in the car beyond a turn-key bracket race car. And I hope you don't take that as any cut on the hard work the records demand. It's not the car that earned them. You did though your dedication, diligence, and knowledge.