does anyone have the part number for the flowmaster muffler that will/should fit in place of the factory muffler? Has anyone done this? If you have, what series did you use? I was thinking about using the 40 series or the 40 series delta flow. right now I have it straightpiped and i like it... sometimes. the drone has gotten pretty annoying and now that I have the AFE I would rather hear the turbo instead of the drone. does anyone have any ideas? thanks -Jeff

I got the stock number from the flowmaster web site. It is a big block muffler if I recall correctly.

Check out this thread (http://dieselplace.com/forum/showthread.php?t=24018&highlight=53553).

The two part numbers I've seen posted:

953558
953553 (slightly larger than 953558)

Both are 3.5" 50 series.