http://cgi.ebay.com/ebaymotors/ws/eB...K%3AMEWAX%3AIT

I know these headers are made for NNBS, but will they fit a NBS? To be specific, I bought an 06 Chevrolet Silverado Z-71 5.3 4X4 Ext Cab with a 6" Superlift Knuckle Lift kit. I would assume they would fit since the pacesetters do fit some models of NBS and NNBS.

 

headers might, Y-pipe probably won't. On the GMT800s, the y-pipe to catback connection is angled. GMT900s it is not. At the very LEAST, that will require modification.

That's not even a good deal....

 

For that price you could get a set of ceramic coated long tubes for your specific truck lol... Also, the last lot of OBX long tubes that came through ebay were advertised as 1 3/4" primaries with 3" collectors IIRC, however they got those measurements by measuring the O.D. of the pipe, rather than the inside diameter which is what matters. The I.D. of the Y-pipe ended up being closer to 2 1/2" that 3" where it mates to the collectors and the cat back as well. Probably wouldn't make much difference on a mildly bolted truck, but still worth noting. I do like the way the collectors bolt to the Y-pipe, and also the built in resonators better than my setup though.

 

Why nit just buy a set of LPP's for the same price for your year truck???

 

Well, I want to stay catless, but I need to pass visual inspection. The obx are the only headers with "mock cats".