the plan is ill do a custom exhaust ,i have two magnaflow mufflers with 2.5 inlets and out lets gonna do one X-pipe a long one (like y pipe from headers then spleting befor mufflers to another y pipe)
so the piping will be 2.5 into 3.5 then agine split to 2.5
keep in mind that i intend on putting eather a cam or swap the littel 5.3 to a bigger 6.0 or 6.2 motor may be a year later my ame is 400 whp and ill get there one way or the other

so i saved up some money for the headers and now i have two in mind

OBX stainless steel +y pipe with cats

and was wondering if the 6.2 obx headers will work on the 5.3...they didnt mention the primery nether the colector size
i know the 5.3 obx headers is 1.5/8" and i want 1.3/4"

http://www.amazon.com/OBX-Header-Che.../dp/B002GUGTI4

and the other headers is

pacesetter w/out y pipe + ceramic coated

http://speed-eng.com/store/pacesette...}1324{337}1279

so the second one will cost me alot less even if i bought a set of plugs and plug wires (taylor 10.4mm)

so what do u think i should buy

 

I love my pacesetters! Great fit and excellent performance!

 

My friend has some OBX headers on his 09 and they looks, sound, and perform great. OBX is what I would like to get.

 

you cant go wrong with either, just depends on if you want stainless or ceramic coated

 

Both are about the same. I believe the pacesetters are 1 3/4 with 3" collectors

 

pacesetters are bigger, but the OBX has flanges which is where pacesetter lacks bad imo. i had a hole in my y pipe from the slip fit design. i had flanges welded on mine for cheap anyways so im happy with the way the work now

 

whats the difference?
i thoght they are the same?

yeah thats true but what about the 6.2 obx....is it a 1.3/4 with 3 inch colector

not a problem

 

the OBX set up for the 6.2 the flange is for the 3.5" vs the other set up of 3"

if you want go and have v band clamps welded onto the LT an Y pipe or 3 bolt flanges welded on em. i hate the slip fit style now, just my .02

 

so the 6.2 obx is 1.3/4 with 3.5 colector? reducers will cost me somthing like 50$ both +welding them into the Y pipe...now i lean twards the pacesetters

 

no, the peice that connects to your stock exhaust on the back of the Y pipe is a 3.5" the only way to get the 3" connector that you need is to buy the ones for your motor. that down fall is they are a 1 5/8" vs 1 3/4".