Don't cut the bracket on throttle lever in pic 1 , thats for the return spring , it runs from that hole to the throttle cable bracket .
The two threaded holes on drivers side are for mounting the solenoid that bumps up the idle speed when the a/c on . If you have no a/c , but have an onboard air compressor , you can get one to raise idle when airing up .
That vacuum can on the pass side locks out the secondary door based on vacuum .
Pic 3 , the thing on secondary throttle shaft is the secondary lockout , choke controls that , when choke comes off , the lockout moves out of the way .
Pic 3 , the small vacuum cap line went to a vacuum can mounted on pass side rear of carb , not on every model .
I don't remember what vacuum port went where , been a few weeks since I looked , will dig up the post I replied to with it if ya need it .