After hours of going back and forth between leaning over and laying under the Mini, I finally figured out the Racing Dynamics catless downpipe just will not fit. The holes for the O2 sensors do not line up with the bolts in the heat shield. The downstream hole is off by a full 2 inches. The holes on the mounting bracket are too close together, so they won't fit over the bolts. And, even if the bolts would fit through the holes, when adjusted to the end of the slots, the downpipe is still almost an inch from the turbo.

Now I'm sitting here dirty and tired trying to decide with all that is wrong with it, should I get them to replace it, or just send it back and order a Milltek.