Last year I scored a couple of tanks and was ready to start my build in the winter. I was offered a remodel job that I couldn't turn down so I wasn't able to start until this week.
this was the plans I drew last year
It is 1/4 inch thick, 30 1/2 inches diamiter. When I get the end welded back on the tank will be 51 1/2 inches long. Warmer box will be 30 1/2 X 30 X ?. I am still finalizing the plans for the warmer box. There will be a door between the cooking chamber and warmer box that I can open, then close the stack on the main chamber if I need more room. This will let the warming box become a smoking chamber also.