Where does the car run, track or street??? We run low tension oil rings on a drag engine, replace them after one season, usually about 100 to 150 passes. The big crank radius' and narrowed bearings work good.... Guess it'd be up to you and the engines' intended usage as to whether or not it's worth the extra expense and effort... Don't think I would bother on a street engine, hard to hook up and use the available horsepower without even going to all the trick stuff...... Some of these power gains will only show up on a dyno, not much "seat of the pants" improvement....