sonofsam 5 Posted September 7, 2007 This will be good to find out as previous kits that use a spacer (I can only think of the Autofive one) used to fit under a 15' wheel & I can't see why these won't if they are spaced for the same amount. Graham. I can now state that from my own personal experience, that the Constella big brake conversion brackets using GTI6 disc's will not fit under 1.9 speedlines or SMR's I guess you could dress the caliper a little, however I wasn't prepared to do this for the marginal gains given. Needless to say I have gone back to the standard brake setup albeit with Mintex 1144's , so I could fit the speedlines back on, and probably save a bit of weight too! Share this post Link to post Share on other sites