For the rec. I did a dyno with both X and H pypes .And guess what Old fashion H pipe still has the best resolts .X pypes suck and sound terrible LOL.
You need more than one dyno read to determine that. If you want more torque, then yes, and H pipe is a little better. For most people in the know, Cobras function better with X pipes due to the high revs.(high end) Smoother evacuation= better performance. Your statement is simply not true.
man i just picked up a 96 cobra and its a big step up from my 5.0. ive been asking the same questions and ive been hearing different things the most helpful addons ive been told of are pulleys, a CAI, subframe connectors, 4.10 gears, a short throw shifter, and a new exhaust should have you running very low 13's