I did it last year and it looks the nuts. The guys at German and Sweedish said they wouldn't fit and wouldn't sell them to me! I went to the main dealer, bought the lenses and the bulb holders and bulbs, adjusted the looms to suit and never looked back!
the crystal look looks great against the black paintwork I have and brings the car up to date.
I made the mistake of putting 'lexus style' rear lenses on but after about a week was too embarased to drive the car so a nice pair of FK-Automotive crystal 'M3 style' replaced them. bought from jv on here.
I also put in-pro crystal fronts on which enabled me to keep the factory front fog lights. I learnt the hard way, getting a pair which split at the indicator, meaning a choice of no fog lights or foghlights and cr*ppy tow hole covers with crystal indicators.
Turned out nice in the end though...
