[quattrorunner]

400hp is too much for the 915, and it's somewhat difficult to add the 930 trans to a non 930, this makes your choice easy. Unless your budget is tall, then you can make the 930 trans fit or jump up to the g50. But if your budget was tall, then you could just get the 930 and be on a head start so to speak. I'd get a 930 and lighten it up.