Easiest way to tell is...........
Small case has six bolts holding on the back plate.
Medium case has eight bolts holding the back plate on.
Large case(evo) has a removable mount bolted to the back plate.
Easiest way to tell is...........
Small case has six bolts holding on the back plate.
Medium case has eight bolts holding the back plate on.
Large case(evo) has a removable mount bolted to the back plate.