I’m looking to rebuild a 400ex and I’m torn between stroking it to the 460 or keeping the stroke stock and going to to the 440 big bore but i need some ideas I plan to do barrel races and i want grunt power I’m planing to widen it with a dura blue +4" axle and 3in spacers on rear axle and also widening the front with true flights +3" but forr the power wise i want some ideas i want to go fast for the 400