[Adam Skelding]

No need to make a shell that only works with one type, hence the cowl.

If you are going to only run RM, you can cut it just for RM.
Or if you are only going to use MM you can cut it for MM only by using the cowl as a stencil. that's what I did on my MM standard shell.

If you are a true body 'whore' you can have one painted in each config and spend double the money