I'm having the same problem. P&H quoted me £64.00 for the bracket, reservoir and longer hose from the performance cat. Any pics or advice on relocating the brake fluid tank would be much appreciated.
Just knock up some longer brackets either from strip metal (Halfords do some metal strip ready drilled for car stereos), or modify some other type of reservoir...and JHP sell the Brembo hose by the short length and the clips for pennies.