New exhaust question X- vs H-pipe

[Dirka]

Hey all,
Putting new exhaust this upcoming monday on the ole 77 K10 305. Nothing special for mods except a mild cam and set of flowtech afterburner headers and a edelbrock 600cfm 4bbl carb.
I'm going with my personal preference of magnaflow mufflers, but curious on what peoples opinions and thoughts are on the X or H piping and where to put the X or H in the system?
Thanks.
I should also mention I plan on doing turn downs instead of going out the sides or all the way out back. (if that matters)

[Irish_Alley]

you want back pressure of some sort. "x" need some room to cross in and out, "H" dont need much room at all. x will give you  more back pressure since it forces the gas to mix. h will do the job but not as much as the x will since it its not forced but its better than nothing

[VileZambonie]

H pipes tend to lend performance gains in low RPM range while X pipes help high rpm gains. I prefer an H pipe to avoid unecessary obstructions. Either is better than neither

I should also mention I plan on doing turn downs instead of going out the sides or all the way out back. (if that matters)

Curious why you want to do this?

[Engineer]

The closer you can get the cross over pipe to the headers the better it will work.

[Dirka]

Vile, just something I want to do and see how it sounds.