If you mean this type, then yes it kinda is needed;
https://www.snydersantiqueauto.com/P...earchByKeyword
It mounts and holds the engine from the side like the KR Wilson stand. Allowing the motor to be tipped on its nose when doing the flywheel housing setup or rotated around to do rods. Some operations can't be done using the rear mounted setup such as the flywheel housing setup. You could resell it after you use it and reduce the over all cost. (I did not look at Macs price so don't know what it is)