v8racefan and robm - I posted the brackets off today, my apologies for the delay - kitchen reno's at the moment so a bit crazy here.
2 x sterns for v8racefan
2 x ballys for robm
please post some pics once installed.
For the Sterns if you don't know already you disconnect the bubble level and use the 2 holes as your guide for the new install - the protector forward hole uses the plunger side back hole of the 2 and then you locate the bubble back hole of the bracket on the existing front hole - then this means you only drill 2 new holes the forward hole of the bubble level and the back hole of the protector. Remember just a very tiny drill for the pilot hole for your screws.
check out the photo I listed on the first post.