Now that my debacle is over with the first failed pulley attempt, I was able to successfully get the upper pulley and stage 3 tune files loaded into the car and go for an initial test run. Having already run on the stage 2 tune, I was not expecting much of a difference, but I can happily say that the small price for the upper pulley (assuming you don't run into installation issues like I did) is worth the investment. For an extra 20 or so extra HP, combined with the TCU tune and 200 cel cats, the car seems more nimble than ever before. Maybe the new plugs (although doubtful) made a difference too. Nevertheless, I will get some 1/4 mile times soon to compare, athough I have already successfully ran a 10.98, so time will tell.

Thank you to @VelocityAP_Chris and Stuart for all their assistance!