Originally Posted by
Gadget
Or even easier, use something like this but with the 36 -1 pulley! and keep all the original parts!

Well, it's a little harder as you have to align the 36-1 tooth trigger wheel and CPS with the crank and you need brackets made up for the CPS. You also loose the "Factory" look, but you do get to keep the pulleys, Sierra ones are super hard to come by.
I certainly would choose one of these methods over drilling the block though!
Lee