When I was racing my Corvette in '10 I had a guy tell me the best way to get better horsepower at higher rpm's on a 5.9 cummins was to destroke it. I thought he was crazy. Turns out he was right but the cost to do it was crazy so I never tried it. Although his truck is a top contender in the diesel scene now. Sometimes crazy ideas work, sometimes you spend double. Been there.