hinged floor plate to dbm

As the title states I just picked up a model 11 22-250 with a hinged floorplate.
I am using this as a donor action to make a 20 practical (20-223).
I want to convert this to a dbm style.
I already have several 223 magazines.
What do I need to get to make this conversion?
I'm thinking just the bottom metal. Yes no?
Thanks Gary

You know, I have wondered if the frame from a hinged floor plate model could be retained and used with a dbm setup. Drive the pin and remove the floor plate assembly. Dunno might be something to look at.

I'll answer my own question by saying YES just the bottom metal $79 at savage. Received it today