I ordered a small heat exchanger to mount WITH the stock H/E, except this will be above it more towards the top of the radiator, partially behind the upper grill. Woody has taught us that the main key to cooling isn't necessarily the H/E, instead its the location. The stock H/E should work fine, if located behind the upper grill.

The lower location just doesn't get enough air, and even an upgraded H/E will suffer in the lower location.

He also taught us the stock H/E doesn't flow very well, so adding a second H/E may not be wise. But I'm a 'common' car enthusiast unlike Woody, and I'll be happy with just an improvement instead of an all-out revolution in design. So the stock H/E in the stock location, with a second, smaller H/E behind the upper grll, should be enough to counter-act the slight increase in heat from the code3 pulley.

Since I live in Arizona, I may do colder plugs year-round. I'm not sure yet... Sheesh this car is more needy than my girlfriend. It whines more too.