offroad H or X pipe??

[03stangGT]

I've already got a Mac offroad H pipe, sounds great, makes good power. I got it off my buddy for 50 bucks, I found a Mac offroad X pipe for real cheap. I'd like to get the X if its worth the money, I've heard they rattle from a few people. How do they sound compaired to the offroad H? do they produce much more HP/torque? thanks


03 gt

pro 5.0 short throw
fms 3.73's
brothers speedcal
steeda timing adjuster
K&N
upr white face guages
Mac offroad H pipe
2 chamber flows