I think something is wrong?
So now my 2004 Cooper S JCW will have to sit till spring before I can start working on her. This really sucks.

Sorry about the size, I didn't know how to shrink the picture.

 

Based on your photo, I'm seeing old parts next to new, updated parts. The bolt holes and notches all seem to be in the same places. I can't tell from the photos if the tensioner guide is broken off or if the old design just stopped short like that.

 

 

These aren't old spec parts next to updated parts. They're broken parts next to new parts.

I concur. Betcha the broken off bits are sitting in the oil pan.