For the grills all I did was get some angle iron from the hardware store and run a piece in the front and the back about an inch below the lid opening. I bolted it in with 3 bolts on each side. I went by the "Grill Outlet here in town, they sell it all, and got some grills. Unfortunately, no one makes a 22x32 inch grill. So I had to take two smaller ones and modify them. This gave Big Smokey a cooking area of 22x30.
You can also see the opening in the top of the cook chamber for the vent. This was later changed to a damper collar. The installation here is the same as the other two holes in the barrels.