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

[/quote] If you position the car so that the engine/ transmission centerline is level the math is easier as your actual pinion angle reading will be relative to the crankshaft.[/QUOTE] so if you leveled the transmission CL you would then level the pinion plus/then moving the pinion down a few degrees (from level) depending on the type of driving/racing you will be doing. Am I on the right track here?