Pinion Angle? Do I have this right before I cut it up?

Yes, the 5-7 degree figure is for hot street and drag cars for hard launches. BUT that is the pinion that needs to be 5-7 degrees DOWN from the drive shaft angle, so that's not necessarily 5-7 degree working angle if that makes sense. It's all in the MP manual. But that's hot street and drag, so unless you're going that way, you should set it up normally. I always still go a little further down at the pinion with "any" type performance build. It helps give the rear suspension more lift on acceleration, which plants the tires.