There seems to be enough Gee Bee builders to warrant this questions. What do you guys have in the front of them.

I have a kit on the way (Adrian's Gee Bee Z)and I am pretty set on the Saito 72 but I have never run a 4 stroke so I keep thinking about an Irvine 53.

I talked to him personally and he has never run a 2-stroke in one. He uses the Saito 56.

So if you don't mind sharing you engine and prop choices I would appreciate it.