Just crawled up underneath the dash of my 68 Charger (in limited door opening space) OUCH!!!! you owe me, LOL

Does not Appear to be a spacer. The switch is actuated by the
back side/ top angle of the pushrod. Hope that makes sense.
So it would appear that your switch as pictured needs to go towards the right or passenger side of the vehicle. is the bracket slotted left to right for the switch position ???

hope this helps a bit