Yes, you can get 24mm G's by Ellis Mountain. They are G35's. You can get them at Magnum (just one place). I am planning to use them in one of my rockets for a cluster too.
pheonix? funky missile thing thats in my profile (dont know the name of it)...
hmm... how bout an alpha... using the bt as a mmt... im sure that would be some sort of record...
edit:
how bout a fat boy... i mean, it has the fin holes pre-cut, and it would be funny as hell to launch one on a G next to a bunch of lpr... oh god, i shoulda done that at camp... horrified the kids
Well, considering their size, what I would do is just put some fillets on the Phoenix and the Fat Boy (if you don't already have them) and add a little nose wieght on both. I am not sure that launching the Alpha on a G is very smart. If you want to you can but I do not believe you could do anything to help it fly better. In fact, it probably would be very dumb and VERY dangerous. I am just telling you what I would do. You can do what you want.