Sometimes old school habits, good or bad, die hard Todays hypertutic(SP?) pistons are ran with a lot less clearance than the OEM cast pistons did back in the day. That trick on flipping the wrist pin offset was worth around 8 HP (reduction in internal friction )according to one of the old inside track information Mopar spnosored racers, that was a good, cheap, legal gain when you where basically looking for one or two HP I've seen that gain from using Pro Blend on a 500 HP motor, which is right at 1.7 % gain