Very nice custom work as always G !!!!
worked on another yesterday... i like to leave a slight gap around all parts welded if possible... all 1/8" thick 6061... and the gap with help penetration without as much heat or effort... i also tried decided to try out 4943 filler rod... as this one will be polished too... i want to anodize a couple (maybe) to see how they look (so typically 5356 rod is used when coating afterward)...
this one will have two 5/16"-18 mounting bungs on top (like the other) and a 1/4" npt on bottom also.. but center fill and slightly shorter... at approx 10" (ended up 9.875"), the other is approx 12" long.... both 3.5" in diameter