N11 Off Road Identification help.... Again! Labels, stencils, dates

[Rick B.]

Recently received some pictures of an N11 offroad exhaust system that has me bewildered.

Plenty of posts on production versus service pieces and the forum has quite a bit of clarity on the characteristics of each. The set attached has characteristics of both production and service pieces on a single set.

Iinterestingly, have NO debossed part numbers, A's or W's and NO debossing of the the GM. They DO have a GM distribution label on each AND , and a debossed coding for the shift and date, AS WELL AS the Offroad stencil

I was under the impression the stencil was typically production?
shift date codes were NOT typically of production but rather service?

So, what N11 are these? service pieces? Any help or theories would very much be appreciated.
(see distribution labels on post#2, only 4 photos per post)

Rick

Note these appear to have never been on a car or manipulated.

Image 12_2.jpgImage 5_2.jpgImage 7_2.jpgImage_2.jpg

[Rick B.]

Re: N11 Off Road Identification help.... Again! Labels, stencils, dates

GM distribution labels from NJ Plant

Image 11_2.jpgImage 2_2.jpg

[Steve B.]

Re: N11 Off Road Identification help.... Again! Labels, stencils, dates

Rick, my guess is that you have a very early service part. I had an exhaust system like yours and the guy I bought it from told me that he got it from a Chevrolet dealer in the late 60s. I did see what I thought was an original N11 exhaust and I only saw a letter A on it with remnants of the stencil too.