Took this off to go w/ a dual Magnaflow setup about a month or so back. It is the welded aluminized case, 3" center inlet/outlet part # 17220, also I'll throw in a 3" turndown. With this setup I gained about 2 tenths over the Gibson that I was running beforehand...35 shipped. PM me and I'll try to check back often...Zed

Paypal or Money Order only !!!

 

ttt...

 

Zed, how loud was this muffler? might be interested in it for the Z71. Not sure, I kinda want to stay a little quieter with this truck

 

It was probaly a little louder that your last set-up but I can't say for sure cause I never rode in your truck. I know that dumped it gets pretty loud in the cab, but it should be quieter if it was ran out the back or to the side because it would get pretty quiet whenever I ran over the grate at the top of a bridge on my way to and from work everyday. But yours is an ext. cab so if you were to dump it at the axle it might not be so bad...Zed

 

Here's how it sounded when I first put it on before the bigger cam an 3.90's...Click here... and go to the '99 GMC...

 

How long did you have it on for.

 

Put it on last Nov. and pulled it off the first week of Sept. when I changed to duals. It has some surface rust on the welds (it's aluminized), but that's about it...Zed

 

Sold !!!