thanks alot guys mine is a 4wd,do you guys think i should shift at a higher rpm with the ls9 cam,but dont wana wreck o push anything.have the stock ls9 springs that the cam uses .

 

I would do exactly what others are saying here... go with the 1 7/8" headers and a factory 6.2 3.5" cat back if youre really concerned with the noise. At your power level that stock muffler would definitely hold back a few ponies though.. I'd rather see you with the biggest straight through muffler you can find (ive heard a 22' Magnaflow is pretty damn quiet) combine with the resonators in the 6.2 cat back and you shouldnt be much louder than stock at idle or cruise. Between that and a slightly smaller pulley to bring you back to 8 PSI of boost you wont believe the difference.

 

Thanks guys greatly appreciated,what headers now cant afford kooks or arh.i would like to pay around 500 bucks do any companys have 1 7/8 for this price and decent ones..Any used headers on the market i have the new bodystlye truck

 

You can check the parts classifieds for them, I think they've gone up for sale etc. here and there.

Also, check the sponsors, they have the best deals you can find new most of the time.

If none of them are in your price range (which I doubt they will be) , you might just have to wait on the calspeed ones... nnbs are expensive headers and the 1 and 7/8 will cost a bit extra too... but it is definitely worth it to you

 

I'm betting cheap headers in Wisconsin would be a very short lived mistake on a daily driver.