Bearing wear should not be an issue. The cylinders should wear out before the bearings do. There aren't many differences between a performance and stock bearing that I know of. Nothing other thans special coatings or narrowed bearings that reduce friction but don't increase the load carrying capability of the bearing. I have not seen it done on gas engines, but I know General Electric had a problem with one of their new series of journal bearing steam turbines in the early 70's. Basically, the bearing was getting pounded to death by the rotor of the turbine. The fix was to add an oil dam in the surface of the bearing, or a relieved area with a sharp edge. Something to do with the hydrodynamics of the oil on the bearing, but I'm no expert so I can't explain why it fixed the problem. Maybe there is something similar for cars, but I doubt it. These bearings aren't going to be exactly the same as on a car because the load does not reciprocate, only the weight of the turbine is supported by the bearing. Also, the speeds over the bearing surface are much higher, the turbine has a 6 inch diameter shaft spinning at 6200 rpm.