using a gear drive on a 440 nosiy ?

Years ago a gear drive was the most accurate way to drive a cam, and allowed easy cam timing changes. The Pete Jacksons are no better than a chain. They are not anywhere near "the ultimate"....lol. Milodons are what I use. They are a $500 plus installation time really cool noise. If you are interested in the ultimate, that would be the Jesel belt drive. The belt technology did not exist years ago to have thme be reliable. Nowadays they are great, silent, take less power, and dampen valvetrain harmonics in addition to dead nuts cam timing and easy changes.