Here is what I did. Real basic and no other drum need either. I used the charcoal basket from the drum, with an additional charcoal grate near the top, and placed a cast iron grate from a large BGE on top of the basket. This is excellent for short, REALLY high heat cooks. Have only done rib eyes this way so far.
Great char and crust on the beef. Don't forget to pour on some herb butter for added flavor and that all important crowd pleasing GIGANTIC flare up!
The cast iron grate is about 4" from the coals.