not that I want to fan the flams of people bashing me... but I would like to clarrify what I said, and meant... I never said the H made more power than X... you guys should read a little better... what I said is the H balances out the flow, so you don't have that problem... (it's better on your engine, but not more power) the reason I like the H better than X is the sound of the H, since it does balance out the flow, and you don't get over pressured pipes and such, is the H is a more classic mustang sound... I also never said the X was Tinny, I said it was more than the H... I think my comment about the 4-6 cyl thing was taken the wrong way too...
-long story short, I like the H sound better than X (just classic), X makes more power, but H is easier on the whole system (even if it is miniscule)... I will forever be an H guy... that's all...