So I chucked the BBS's back on tonight after getting some new front tyres put onto them today.  Great to get them back on and now I can fit the R8 calipers.
The TT hubs have made the track almost too wide to have the BBS's fitted, but I thought I would see how I get on.  First big bump in the road and they bloody catch.  They have a cut themselves a new groove line too.  

  Tomorrow there will be some wing removed!!!! 

Ordering some of these to bring the top of the wheel back in and to add some more camber:

They look like great bits of kit and I hope they work.