Still, I think you are better off switching to a full synthetic at a thicker weight, and adding an oil cooler. I wouldn't worry about the pump unless you are about to tear apart the engine again, and even then, probably would not have the same effect as switching to a better thicker oil.
What are you doing at 6,000 most of the time? Please tell me this is a dedicated track-only car.
2003 Ford Focus ZX3 2.3l N/A = 221 HP, 162 ft-lbs, firstname.lastname@example.orgMPH - SOLD
2006 Ford Fusion 2.3l Turbo = 244HP, 247ft-lbs
2014 Ford Fiesta 1.0; Turbo