X pipe or H pipe, again

Ok so update, I got a 304 SS H-pipe 2.5" from TTI. I have a pair of SS magnaflow straight through mufflers comparable to the dynomax mufflers that come with TTI exhaust kits. I just prefer the sound and quality of the magnaflows. I'll be ending it with a couple 45* turn downs angled towards the sides of the car. I'm fabbing the connecting pipes from the Doug's headers to the h pipe out of 304 SS mandrel. I'll post some pics when I'm done.