you can get a gt bumperif you want i put dual exhaust on my v6 and i didnt need to cut the bumper, i just lowered the exhaust tips about 3 inches i think it looks cool but thats just me. but think about whatever is cheaper for you, and by the way if you do get the gt bumper you need dual exhaust or else it looks bad

, this girl i know did that and she doesnt have duals and it looks cheap and horrible.
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2000 mustang v6, 5 spd
mods: cai, flowmaster 40's dual exhaust, painted brake calipers, stage 1 clutch