Hello all,
I've been looking around for a taller screen and information seems to have been a bit scarce so I hope this helps anyone else in the same situation.
The Givi screen is exactly 100mm taller than standard, it also measures 100mm wider just below the top, 55mm wider at the GPS bracket level and an extra 20mm at its widest part.

http://tinypic.com/r/2wh13dl/5
http://tinypic.com/r/28wgd9s/5
http://tinypic.com/r/28ahvmh/5
http://tinypic.com/r/21cgp6e/5
http://tinypic.com/r/xcrbqc/5

It seems nicely finished, robust and it fits perfectly. This was the best price I found: http://www.hard-motorcycle-luggage.c...8.html#aPLX363 �73 inc VAT and P&P.

I'll post how it helps with the air flow for me (6ft) a little later...