The link you provided is all about the insanity of spending money on replacing the timing chain with aluminum gears to grenade your engine, & doesn't mention Joe Caruso or his steel timing gears in it anywhere, other than a passing mention by yours truly. While it is exciting to hear that someone might be doing a timing gear set correctly, unless you're setting up to race a Guzzi in vintage classes, it just doesn't make much sense to replace the reliable & cheap timing chain setup with something that is going to start off expensive & only stands to get moreso. BTW, any projected price on those?