I love the way nobody actually answered you original question Easy, and it just spiraled into a "is it worth it" discussion!

So the answer was of course: yes you can have X51 fitted for less if you already have PSE.

This (as I'm sure you'll remember Easy) was discussed on the below thread:

http://www.rennteam.com/showflat.php?Cat...true#Post282715

Personally I would be quite annoyed if I paid for a X51 retrofit now to find that later in the year a base 'S' facelift model would produce about as much power for a small price increase. Obviously though what you loose in trade-in depreciation would probably outweigh the cost of retrofitting X51.