I'm going to a 5-stud set-up using Cortina-based stuff and I'd quite like to use ali hubs such as those sold by Rally Design (they sell them undrilled on request) but piccies show the od of the mounting surface to be quite close to the Ford 4-stud 4.25" PCD holes. If I get them drilled for 4.5" 5-stud Ford will it become too close for comfort? Has anyone done this before? I've seen Escort grp4 ali hubs with more meat outside of the studs but no 'Tina ones. Ideas or experience of this would be good.