Couple Of Questions About Lt Headers / Mid Pipes / Exhaust

[rushfighterx]

Hello all I have a couple of questions, I have been looking everywhere trying to find what I'm looking for but I'm out of luck..

The first question is if I order a part from eBay would it really be that much different than ordering it from a site like american muscle? This is the item I was looking at..
http://www.americanmuscle.com/stainl...pe-1114gt.html

I saw on ebay that I can just purchase the parts separately and I'll save a decent amount of money.

http://www.ebay.com/itm/Performance-...dX9uiL&vxp=mtr

http://www.ebay.com/itm/JBA-6685SXC-...dYHBiG&vxp=mtr

Aren't these items almost the same? The only difference I see is that the midpipes aren't labeled as "hi flow cats" but they look relatively the same, is there a difference?

Also another question is that after I purchase headers, cats & mid pipe, will it fit into my exhaust? I currently have an roush axle-back exhaust and since all the piping is 3 inches, I was wondering how it would fit onto the roush axle back exhaust when it's diameter on american muscle is listed as 2.75 inches.

Last question is that I called my local auto shop (henry's muffler shop), they gave me a price of $475 for hi flow cats, resonator delete, and a x or h pipe (I haven't decided yet). I was wondering should I just take that deal and then buy my headers online separately and then let them install it?

Thanks!

 

[SpartaPerformance]

First off you're not comparing same brands. One site has Stainless Works which is fine engineered and American built and you're comparing it to eBay Chinese made JUNK! Then you have to see if the JBA midpipe fits the China JUNK headers. Usually manufacturers make headers and mid pipes to fit exclusively with their own stuff as far as I know. If you don't have the money to buy good stuff, save up until you do or look to buy something else.