VW swap would be a blast haha. But again, thanks for the info. I'm the type of guy that WILL get something done, I never leave a project once I've started, unless it isn't feasible. That was my biggest concern, the width of the Subaru motor. If I am to attempt this I think I'll end up finding a different Z to chop up as my current 280 I've had for 12 years and built from the ground up, I'd hate to destroy that one needlessly lol.
Thanks everyone, I think I'll look around for something else to drop the Subaru drivetrain into, if not a different Z car.