Front brake upgrade

[Mole B]

Hi ,can anyone suggest a brake upgrade on my A4 B6 3.0 quattro 2003, Been looking at 17 z Brembo apparently bolt on upgrade ! Shall I try better grooved disc & pads, finding measurements hard to match up,any help welcomed Mole b

[Magnet]

Hello Maurice,

Is your intention to upgrade the braking system based on wanting to use the car for track day events? 
Do you know what make of pads are currently fitted to your car? 
 

Kind regards,

Gareth. 

[Mole B]

Hello magnet,car will be a daily driver, problem I'm getting is I'm being offered 320 mm disc,the standard one's are 312mm.im looking for decent grooved disc & pads,had suggestions of spec,need to know if the 320mm are a straight swap,will be replacing fluid as well,any info will be appreciated thanks mole b