You're very welcome Steve.
Here's another chart giving a bit different range.
In both cases, I think these are more applicable to older engines than to anything made in the last 30 or so years. For stunt, you want something in the range of 4" of pitch, not 6" as this suggests in many cases. This will permit/require the engine to run in the 12000 rpm range in the air, where it has a chance to make decent power with decent fuel suction without modifications.