I passed on the catchcan you got me from JEGS onto Perds, and got Grizzly's Custom Shop to make me one up in aluminium. It is 8.5" tall and 2" diameter. I got them to weld the half round brackets onto it, which are the same profile as the frame downtube, then drill and cut a thread into the downtube itself, so it bolts directly onto the downtube just behind the riders left leg.