My Cooling Improvement Project (hopefully)
This goes along with the air dam, but did you close off the under side of the car from the rear of the radiator support all the way to the front of the K member? Believe it or not, this will help direct even more air through the radiator. Look at any new car with a small grill. There are no openings in that area. All kinda little plactic shields and such. Just an idea.