Hi. I have a trackball and i mounted it with the plate 55-1101-00 from Happ. I just cut a hole for the TB to fit and used the plate to mount it on the CP. Seems you need part 55-1103-00 or 55-1104-00, difference is color. The plate holds the TB and mounts to the CP. The other part is for extra support for the TB, sense it will be in your house and not an arcade should be fine.
Matt