This does not look like a good X-pipe. The pipe comes in at 2x2.5 inch pipes, but the middles looks like it's only 2.5 inches in size. Basicly cutting your exhaust flow in half and adding back pressure.
Most good X-pipes I've seen double the area at the cross so that it's not just a big exhaust restriction.
Now THIS is a great X pipe! And cheaper too!