Rod...not positive what mods they made because I did not see it with my own eyes but they told me there was some unnecessary bar that ran along the header (some added support?) That made it not fit properly but did not affect the system somthey had this cut it off.

******Update******* Several extra days and a little heartache with the shop. Not positive the updates I was getting along the way on the install work. I am unsure if I was getting bad info due to poor communication from shop staff or if I was being fed a line of bullshit. Either way.....the car was finished today and my teenager picked up the keys for me this afternoon while I was at work. I worked late but even though it was 12:30 a.m.....I swung by the shop and picked up my car. Aesthetics. ...under the hood and under the rear end looks fantastic! Sound.....friggin new exhaust sounds badass! Performance.....acceleration is noticeably improved....feels like it jumps when I hit the gas. Next project will probably be fixing the vacuum system for headlights.....leaks a bit and have to use bypass and hand lift them....after that will be power steering unit since a line is leaky (mechanic said it was a low pressure line but i do not know much about that system). Super happy with the new exhaust.....LOVE IT.