Gear drive!

Stay away from a gear drive if you are running a distributor. The harmonics passing thru the gears causes spark fluctuations when using a distributor. On a dyno this showed about a 2 - 5 hp lose thru the rpm range. You should run a crank trigger system with a gear drive. There is nothing wrong with a good high quality chain or the belt drive system. If you want the noise of a gear drive just for the noise then that is just bling, in other words sounds fast but isn't.