if you manage to do this, is it posible to do this mod with out using the rotor Head by just using a Large block

Why doesn't the opposite of this exist?

Blueprint now live. Check description.

neat idea also because the small merge block is massive

Yes, it's similar to the normal rotor trick, which you have a small rotor head attached to a large base. I've just used a modified large head to do the same for a more robust attachment.

Meant to put a blueprint up too, Look for it in a few minutes.

So I can use this to attack large blocks to small ships? If so that is brilliant!