W8,
Tower site will always show you when they are available if you order right now. We never want to do the "gee, yeah, you're right we said we'd get em friday and we did, but we already had all those sold so yours will be here in 3 months"...

Yes, some engines came in stock. In fact the G34H remains in stock at this time. And more engines are coming as time goes forward....I've had the pleasure of seeing MANY of these new engines run, and the performance has been EXCELLENT.