Apex if I gather correct is a one man business, so something legitimate might have happened and he is sick or is caring for a sick parent or on travel, etc.
Hopefully, you won't have to unleash the dogs of the SOHC4 forum on him...
The tag on the harness is generally considered a good indication of the build year of the bike. The Serial #/VIN seems a little high though...
The harnesses can be replaced but generally aren't until they are much older.
You bike is a early bike as it has the offset carb, right? It has the 45 degree header pipe instead of the 90 degree pipe on the one piece exhausts. Sounds like your bill of sale seller didn't know what he had.
David