Hey buddy,
fellow Arkansansan here, but on the other side of the state in south east arkansas. can't help you on the 650 info but you have come to the right place. 6 months ago if you would have asked me I could not have even told you what a cb750 was much less how to get one running! but thanks to this forum I am now the VERY proud owner of a 750 that SCREAMS! I made the mistake of buying one of those Clymer manuals (wrong, cover to cover) everything you need to get any CB going or to maintain can be found here, just look for it.
welcome, and happy trails! Bronc