BMW carphone screen aerial?

[stevebower]

Hi

I have 2001 BMW M5 with widescreen satnav & in-built phone, but the aerial is a nasty rear-window 'twig'. Does anyone know if a screen-mount aerial (like a 6" strip that stick by the windscreen pillar) would be a possible conversion?

I have one in my Audi and it is much neater.

Thanks

Steve