851 corsa heads, and brakes. 
  just about to embark on a small project on the bike.
 Have picked up some genuine corsa 851 heads complete ready to fit.
 Question being this. will 851 corsa heads fit straight onto a 91 851 DS barells etc, without any further mods.
 Or will I need to get heaps of other bits aswell
 
 Also which of brembo racing calipers are the best option on the 851.
 
 cheers
 red...