Ok, have an MY01 S3 running the concert system. Going to be doing some interesting things with it to see what happens. I can afford to sacrifice just under half the boot space if need be, and make a custom fibreglass subbox. What I am thinking of doing is removing the sub and stacker from the left rear and using that space as part of the box for a 10' sub. Is this a feasible approach? The second questions is I'm looking at some custom pods to fit some 6' splits to the front. Is this achievable? Oh yeah, I'll be getting a custom dash set up done at the same stage to get a decent head unit installed. Feasible or just a pipe dream?