You may not have the edition of the Service Bulletins that the illustration appeared in. It was in the Canadian edition. (As a general rule, the 'thirties Ford of Canada Service Bulletins covered more subjects and contained more illustrations than their U.S. counterparts. In addition to more inclusive Service Bulletins, the Ford of Canada editions of the mid-thirties body parts catalogues are superior to the U.S. editions as they include fastener applications and a hardware catalogue at the back.)
Speaking of publications of limited value, the "green book or bible" published in 1948 leaves a lot to be desired when it comes to originality questions about vehicles produced fifteen years earlier, as in your case. It is easy to forget that it is a service part catalogue and not a catalogue of production parts. Over time and certainly over fifteen years, the number of individual parts that Ford continued to provide for service would drop off progressively. year by year, and if multi-year substitutes were released, they often had different characteristics than the original production parts, especially when it came to appearance. An excellent example of this is shock absorbers.
I recommend that you look for a the 1934 version of the chassis parts catalogue ('33 versions are virtually non-existent). The reprint of it is evidently out of print, but they show up from time to time on eBay and elsewhere and the originals aren't all that expensive either and they have the advantage of being larger, more complete, and easier to read than the reprints. While you're at it, I recommend that you obtain an original '33-'34 body parts catalogue as well (I don't recall it being reprinted). There seem to be a fair number of survivors of those original catalogues and their prices are not that expensive.
The photo of a '33 floor that David referred to is below.
