[2000LtdKen]

Originally Posted by HotRod8

I know a few on this sight (2000LtdKen and RockyMtnRay for sure) have the Gibson muffler with the JBA headers and have reported good results for towing performance. My main question is which Gibson are you using? Is it one of these:
http://www.gibsonperformance.com/products.asp?pid=18352
I guess my other questions are is it louder, quieter or about the same as stock, with the JBAs? Did you replace just the muffler (and headers of course) or other parts of the system as well, piping for example? I assume that this Gibson muffler needs to be welded into the stock pipes? Without going and looking under my truck I don't recall how the existing muffler "fits in", I seem to think it's part of the tail pipe assembly, all one piece from behind the Y-pipe all the way back.

Hey HotRod8,

I followed Rays advice and purchased the Gibson model 788500S muffler. Had a local shop weld it in for me for about $40. It is louder than stock but not as loud as a performance muffler. It has a nice rumble to it when starting, idling and leaving a stop sign but then quiets down at highway speeds. I used the stock pipes because I did not want to lose low end torque. I didn't really notice too much of a change in the power just from this.

Then one day, my son and I decided that we didn't want any more skin on our knuckles so we put on the JBA headers. 11 hours later we were done. You could feel a differenc right away. After about a week or so you could really feel the difference as the computer starts getting adjusted to the new setup and the truck gets real peppy. A joy to tow with. I used to run premium gas when towing to prevent pinging. My truck has not pinged since the JBA installation and I can use regular gas towing.

HTH,

Ken