You might also want to try a bracket from Ducati Designs, a simpler system that fits onto to the ignition lock mounting points.
Their web site is
HERE, it was working yesterday but the site was having a few problems when I tried this morning.
Having said that it's a simpler system, it is SO simple you might want to sketch something out along similar lines and take it to a local engineering shop, it would probably cost you a few beers