How to Megasquirt your 3G Hemi

A friend of mine bought a 68 Valiant and a 5.7 out of an 07 truck. He wants me to help him with the wiring. I'll have to watch this post to do that. Right now I'm building an older hemi with a Megasquirt and have gutted a Joe Hunt mag except for the rotor and coil. It will be driven by an MSD system. I've seen dragsters with belt driven distributors and suggested to him that I could machine a unit to act as a distributor and be belt driven and used just to distribute the spark. He's rather anxious about his engine because of the 8 coil system and the extensive wiring used. I thought maybe the distributor deal could ease his worries a little. What do you think? Also, is there a way to locate the missing tooth on the crank trigger wheel without pulling the pan? Thanks, Bill