Fencer,
Being a little rev challenged, (My Granite is drilled 3 3/8 stacked, my Burgundy Gryphon is 4 1/2 x 5 and my blue is 3 3/8 x 5 with the Green Gargoyle pin centered right above the fingers with the cg kicked out about an inch on the grip centerline.) with that said I think I would try this ball somewhere between the 3 3/8's and 4" stack drill for me depending on what my driller thought.
So far I couldn't be happier with the Gryphons performance. The Blue was a little freaky at first but a little Control-It in the spinner knocked off just enough tack to bring it around to exactly what I wanted when I had it drilled.
Unfortunately I'm probably happier than I've ever been with the six balls I have right now and can't justify picking up one of these G3's or the Slate Blue Gargoyle at this time. Played that last year experimenting with the Gargoyles vs: the Executioners vs: the DC series etc and almost got lost. Execution are good balls but I bowl much better with the length vs: cover the Gargoyles and now the Gryphons have given me. Just seem to get better angle into the pocket. The only exception is the axis leverage drilled Scorcher for those days you could paddle a canoe down the lanes for all the oil!