I'm getting tuned next week at a local shop. My car has flowmaster on it "was on it when purchased" and I've got a jlt rai to install. I've already picked up a steeda 2.93 pulley product number 555-3333 at steeda.com. I'm just wondering if that is the right choice pulley to go with or should I have gone with the 2.81. Someone please chime in