And now you gonna tell us how you know the original 3693710
muffler was centered Tim??? Are you hidin' a stash of them
NOS jobbers in the back room???
The muffler on my '50 had been replace and it's obviously a
replacement, 17 1/2" x 6", the muffler on my '54 is also a
replacement, 21 1/2" x 6", I've got another replacement off
of another truck, it was a '50 3100, 21"x 5".
All these trucks had over 50k on them.
So the only way to tell is as Paul has posted, a NOS, in the
box muffler.

dg



Denny G
Sandwich, IL