Take lots of spare bits of trim, ties etc with you - when I did mine they let me add bits of trim and tie up one or two wires to comply! Make sure you bed the brakes in well - suggest a 'long way around' drive to the test centre to give you the chance to brake a lot - there are some threads about how best to do this - cannot remember what was recommended, but they failed mine on the brakes and they had simply not bedded in properly - spent hours stripping, swapping, re-bleeding etc and all I needed to do was use them a bit!! Good luck