I don't really know how to read distortion graphs, but decay looks good, as well as FR. In fact, it looks ideal for a-pillar mounts. If you keep the near-side tweeter at ~60degrees off axis and far-side at ~30degrees off-axis with a 12db/o hp at about 5khz, it looks like you'll have an almost flat frequency response for both seats with about 7db attenuation on both sides.
That and it's really sexy looking.
Thoughts? Opinions? Experience?