Useful diagram
BTW, if fitting Mustang / 60's US Ford 5 stud wheels, be careful as some were designed for drum brake cars, & on Amazons will need a spacer to clear the front calipers (had this with the wheels that are now on my car). I can't see the 1800s being any different in that respect.
For the ES in question though, the hub adaptors will probably be ok on their own, as the mounting face of the wheel will be already spaced away from the hub.