dealer and brake parts advice needed

[bmgm3]

I have a pair of the GT2 6 pot brake calipers that I'm going to rebuild . Not being a Porsche owner, I don't even know where my nearest dealer would be and what hours the parts department is open. So could any here tell the which is nearest to Dartford Kent ?

I need a set of dust seals and main seals for these calipers . Is there any alternative to a dealer ? Also what are Porsche like for parts availability, prices and time taken to get said parts ? Any info would be great . Prices of these parts would be even better !

Cheers

[bif]

Tonbridge, Kent for OEM equipment