Everybody should listen to Jaster. He had lots of pics showing what he did... had to redesign the motor mounts, lots of custom wsork, and even now he's telling you don't do it. That's from a guy who HAS done it. So it's not just that the crossover pip won't fit, there's much more to it.
That's why the veterans who are playing with the SE S12 are trying different routes, like supercharging, remote mount and front mount turbo, etc.
Honestly, the remote mount I think is the way to go. MC gave me all his pics, and as soon as I get a chance to talk with him and ask some questions, I'm gonna write him a "how-to".