hi Tom the motor looks great.i am sure it will put out some good numbers.Steves motor makes good power.todd goodwin makes a 5 inch bore space 99 hemi .he does truck pull motors 650 inches,and i think youcould go bigger .i think he gets 1100 per cubic inch.if i cant get in some top sportsman races ,i will set the motor up for spray. good luck with the dyno session .later johnny.