[lb7blksmk]

a 4" with a muffler will quiet it down plenty. there isnt that big of a need to get a dp. let me know if i can help you out on any thing.

http://www.alligatorperformance.com...-turbo-back-0107-duramax-includes-p-2143.html

 

[lb7blksmk]

Oh yeah..????

I was refering to making it quieter. Ya dp are a great investment. The change in sound and lower egts is well worth it.