I've put that intake on a few GT's in the past, and I wasn't impressed with it. They didn't add that much power over the baseline of the stock intake, even after retuning the car for P-51. I would expect alot more power, for the price of those intakes. In an N/A set up you might not have as big of a problem with it leaning out a couple cylinders, but with a blown motor its a huge problem IMHO.