My B has wire wheels on it and i want to replace them with some alloys, i would love to keep the centre lock and use certre lock alloys but they are realy out of my price range, so need to convert to bolt on's, front is easy, i know how to do that but the rear? can the axle be modified, would like to keep the wire wheel axle as it is narrower so wider wheels won't rub on the wings. Thanks Andy