I get my 8k tax credit this year and im almost 100% dead set on a power adder for the 99 gt. I live in AZ and most year round its pretty damn hot, in june july and august it get up to 100-115 degrees, the gt is my daily driver so i want the best power adder for that as well, looking for close to 400 hp, nothing more since im not forged. let me know guys!!