You might try contacting some of the vendors who support this site before using a hole in the wall internet drop shipper. The supporting vendors here will often price match their competitors, and you will have peace of mind with great customer support when you need it. I wouldn't trust a dime to any vendor who sells these: http://www.lagunaspeed.com/index.cfm?mod=product&id_prd=964
That is probably the system which eliminates the 4 bolt flange. Not a big deal for LB7 guys, but not good for LLY trucks. It is beneficial to keep the 4 bolt flange to swap the cat in and out for dealer visits/inspections etc. The system that includes the front pipe and eliminates the 4 bolt flange is S6004409. The cat back system is S6000409 and the front pipe is GMS9401. Make sure you know what you are getting. If you have any questions, please give us a call. We are not just some online retailer, we actually install and run these systems on a daily basis.
Support our Vendors.. they pay to advertise on here for a reason. They will treat you right and make you a good deal. As someone mentioned, the little places may have good prices, but that isn't all you are wanting to buy. I've been stung by that bug already once and finally went to our vendors and they got it right the first time.
Why don't you quit being lazy and call/e-mail them? Did your salesman bring your truck to your house to sell it to you, or did you get off your ass and go to the dealer??? Every one of the vendors here has a website for you to browse through, why is that so difficult?
You might also find as we have that some e tailers have no idea what fits a 2006, so far we have had three different customers have to return a system that was built for a LLY vs a LBZ to an e tailer and then buy the correct system from us. We loved it but it was a PITA for the customer. Call us up we'll be glad to get you what you need the first time.
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