Summit Y-Pipe fitment/quality?

[jdyates]

Hey guys, just curious, does anyone have any experience with the Summit Racing y-pipes? Do they bolt right on and fit with the stock headers? I am doing a full exhaust one piece at a time. And are these even worth messing with, like better than stock at all? The stock y-pipe looks pretty restrictive and the bends look like they would mess with the flow. Want to do the y-pipe before the headers. I entered my truck's info and this is what came up:

http://www.summitracing.com/search/...tment/exhaust/part-type/exhaust-pipes-y-pipes