Here are some pics of my Seth Kimmel 3rd Avenue model bass, with a low C extension that Seth made. Bass was made in Feb, 2011. I've had it for about 3 weeks now, and I LOVE it. Great, deep, warm even tone. Super ergonomics and playability. Is fairly deep in the ribs (9 1/2" at the lower bout, tapering to 6 3/4 at the button), and really rumbles with the low notes. The extension is very nice, and scroll does not need to be drilled, and the C string goes around the E peg. Back and sides are western big leaf maple, top is Sitka spruce, and scroll is European maple.