Had a look around but can't find the info I need. If I were to get the Walkers uprated cover plate. What is the biggest friction disc I could use as the standard coupe one is 240mm. What is an Alfa 147 GTA size? And can I get any bigger? As I was going to get Helix or AP to make me up a friction disc out of Sintered or Cerametallic material. What do you guy think on the friction disc as i'm told the walkers cover is the one to get? Thanks J