For a B5/2013 combo I'd go with the medium weight Pro Clutch system. This is going to smooth out the bottom a little and with the shoe weight that we have combined with 4x 1.0's you will be dialed! (I should also mention that each clutch system comes standard with 4x ea 0.9's, 1.0's & 1.1's. So when you get our clutch it also includes the full range of springs tonsetting it up to your liking! And because of the way the clutch assembles you can change them in second without destroying them like with a normal clutch!)