The comp eliminator guy are making >400HP NA with these engines. Mind you they don't have to run them for long.
Are they removing the balance shafts. That's the first thing you do to a Mitsubishi 2.6 that will be raced. The shafts turn at twice crank speed and they have a huge imbalance built in which is rough on the bearings. This is why you don't see any high mileage old Mitsu's. The balance shaft bearing don't last.
