I have that in my pile of research. I would have to redo the rotating assembly, but it would be a good starting point.
However you can buy a brand new NASCAR motor for the same coin.
Buy them for even less. Buddy bought a complete motor for under 7500 bucks. Stuck it in a 68 Dart that weighed 3000 and ran low 9.40's at 143. And that was a restrictor plate motor that had a dinky 248/258 cam in it and was 12 to 1