You have to enlarge the holes in the knuckle, and in the process relocate the center of the hole slightly. That means you can't just drill it out, you have to remove the material from one side of the hole.So I'm working on installing this conversion. Actually working on the rear first. I am running EVO X rear Calipers with 2nd Gen VR4 rear rotors. I know it is mentioned a few times throughout this thread that some "clearancing" is needed to fit the EVO rear Calipers. Can someone clarify exactly what that means? I know the bolt holes for the caliper mount need to be enlarged, is that it? Also the bolt holes on my calipers don't center exactly with the existing mounting holes on the knuckle. Is it just a matter of boring the holes on the knuckle until it lines up? Couldn't that potentially allow the caliper to "float" on the mounting points?