I was just wondering which full exhaust system would give me the most hp? headers, x pipe with cats, and mufflers.my mods are: p1sc with stange 2 intercooler, bust pump, new computer, sub frames, moser 9 inch rearend, 3:70 ratio, wilwood brakes,pro 50 shifter, autometer gauges, flowmasters, and nitto 555r drag radials. the tang is a 98 gt with a 5 speed. thanks
