Mine had the standard t3 and cooler running greens when i bought the car. One of the first mods i did was change to a 500 style cooler.
I have dyno printouts from before and after done on the same rollers but obviously on different days and it gained 25lb/ft of torque, power stayed the same.
Didn't really notice it having more lag?
If you don't want the 500 cooler definitely use a 4x4 over the tiny 2wd