I guess they have a vintage engine class this year - a Ford Y Block won (not by a lot over the Poly, though)
http://www.hotrod.com/events/1510-vintage-mopar-power-550hp-chrysler-poly-318-v8-on-the-dyno/
http://www.hotrod.com/events/1510-vintage-mopar-power-550hp-chrysler-poly-318-v8-on-the-dyno/