Make sure to beef up the legs as the weight of the drum with meat loaded can get quite heavy and unstable with the tall drum. I don't trust the stock SJ legs, too much movement.
Those replacement legs were bent from 1" wide, 1/8" thick aluminum bar stock.
My 16-gallon drum body is currently not set up with cooking grates. I've been using this setup just to hang ribs, with 1 cross rod running at the top. I hung 5 racks of ribs on my last cook and only required 1 chimney full of briquettes.
For other cooks I use the tamale pot on the same SJ instead of the drum.