Well, I am embarking on the greatest....no let me stop. In my quest for a bigger smoker I am building a horizontal out of a 55gal closed drum and a Chargriller side firebox. I am also using some shelving that I had in the basement that was never put together. It will need some modifying, but I sort of mocked it up today. Here's a couple shots: The bottom shelf will be metal, but it comes with pressboard so I threw it on for rigidty while messing around. I made a template so I can cut the opening for the firebox on the drum, but I fear I am going to have problems with the 1" or so lip that runs around the circumference of the drum on that firebox side. I am choosing to mount the firebox on the "bung" side of the drum, so that if one day I want to convert to a reverse flow design, I will already have a good starting point to cut out for the exhaust stack. Either way, I still have that lip to contend with. The next steps will be cutting out the lid, making an exhaust, making some sort of base with wheels and locking casters, mounting the drum to the frame, mounting the firebox, and designing grates and a tuning plate system. Wow, cannot wait!