Spacing Shock Later Spanish Frame with Italian Engine

I'm fitting an earlier Spanish type engine to my series 80 Frame. The frame has the mounting for the fat rear damper and the case is the Italian type.
Is it as simple as fitting one of these spacers to the frame? There seems to be 1cm difference between the two mounts but want to check before using.
https://www.scooter-center.com/en/space ... er=BGM7790
Is it as simple as fitting one of these spacers to the frame? There seems to be 1cm difference between the two mounts but want to check before using.
https://www.scooter-center.com/en/space ... er=BGM7790