My sons dart has the KB 167 pistons in it. Has edelbrock heads with .040 shaved from the surface. Comp ratio 10.5 to 1. Runs on 93 pump gas. 11.60 at 115mph. 254*--.520" racer brown solid flat tappet cam. Stock cast crank and stock 318 rods. Drive it anywhere. Been seriously abused for the last 8 years and still runs perfect