Caution UDS barrel Bigger is NOT Always Better
Biggest thing is barrel size...30 gal vs 55 gal...latter is huge, uses lots of fuel, too fast for me.
I think most people will admit smaller drum is as good and is way cheaper initially and in use...
Plus, smaller 390 gal drum can be used to grille.
Also get new drum! Easier/maybe safer!
Basket for coals is not easy to do right and is important. Welded steel mesh "expanded metal" is fine, with attached bottom pan set inch or two below. Allows for lots of coals and wood, which means no refills needed...measure well. Long metal wire (1/8) is handy, as are gloves.
Topper is inverted SS salad mixer owl, and a SS chimney which I ordered on line for domed Q top...would put up another pic, but am on spare laptop.
BTW, Do not scrimp...
Use three solid SS bolts not coated, for each layer and use expanded-metal grates (3), at top center and over coal basket for
Planter base (fired-terracota) flower-pot base, covered in foil to use over basket as water-filled deflector.
Measure!