Jim, I think you may just be confusing the guy.
If he's getting complete SVT calipers, regardless of whether they are E0 or E1, he will require the SVT rotors.
Both the early and late calipers will be a bolt on to any contour, provided you have the complete calipers, and the larger SVT rotors.
What Jim was trying to say, is that the body of the later calipers is the same as the standard contour caliper, with the difference being in the anchor bracket to make up the increase in rotor size. Where the early SVT caliper is different fromt he standard caliper.