Is it doable? Has any one done it? What I have is a 4x100 and going to 5x114. I also have two holes the size of quarters that will need to be welded in the hub. I want to try and use stock hub and rotor, just dill out the rotor as well. It will keep the bracket I use so I dont have to use washers to shim it out, and then I can use a duel piston caliper. Any help or advice would be greatly appreciated. Thanks.