some people "think" the CB750 was assembled in California. imho, "think" = "bullshit." i'm probably wrong........ won't be the first time.
i bought it off ebay, Australia, over 10 years ago. i paid $500 for it. i will scan the Service Bulletin for set-up and pre-delivery and post it. the loose leaf SB is completely different than the manual.
i will try scanning some of the various literature i have, a lot of it is oversize and won't fit a scanner.