check out the TWIP (the way I play) forums, they have loads of sketch up files done, most of which you can download for yourself, but you'll need to just get rid of the G25 mount (that's what's on most of them) and make it a flat block, as there is no way to hard mount the xbox 360 wheel, unless you want to drill holes in the lap block, but even then you'll have to sort out the uneven surface, so adding a circle underneath the main block to hold the clamp could be a good idea?