Well, I guess my confusion stems more from the idea that I just assumed that SAMS would have a reference to my specific model of RCA television... there weren't all that many color TVs on the market in those days, and so I was just guessing that they would have covered most every model that was out.
Obviously, I was wrong!!
Of course, it could be a case of them indexing the chassis, rather than any specific model, and I'm just looking at the problem the wrong way.
I have an original of that #358 folder (it was the SAMS folder that was provided with the set, and was probably the one that the original owner used for his restoration)... but again, it didn't specifically mention my model, so I wasn't certain it was the right one.
The general interior of the set does resemble what I saw in the #353 folder, so I guess I'll start doing some exmaination, and see how far I can get.
Thanks for the help, though, folks!
-Kevin