I removed the Triumph style filler neck from its stock location on my gas tank by filing down the weld on the inside of the filler. This left me with a clean hole to patch. I used Fredo's drill press and hole saw to cut a new hole at the top of the tank, Frisco style. I just need to cut out a new patch from sheet metal, weld that in and weld in the filler in its new location. I also need to relocate the petcock to the rear of the tank. I'll post pics when its all welded up.