Then you can mount the shield to the spindle. Note: I had to put a couple of shim washers behind this to align the caliper over the rotor. Your results may vary!
Next comes the modified stock caliper bracket. I was hoping to just make a new bracket, but a flat bracket would have interferred with the rotor mounting bolts and the offset of the stock bracket put the caliper pretty close to centered on the rotor. To modify the bracket, I had to cut off the stock caliper mounting lugs (threaded bung) and weld a piece of 1/4" thick steel plate to the original bracket. I do have a template that will get you close to matching the contour and has the holes marked for the caliper. I then welded some nuts to the bracket for the new caliper to bolt to.
Next comes the installation of the rotor and hub assembly. For this, I had to modify a stock Wilwood hat to fit both the Roadster hub size (2.9") and lug bolt circle, as there was nothing available that had the right offset, center bore size and lug pattern. I had a machine shop modify the hat to work with the Roadster hub. I then mounted the rotor to the hat and this assembly to the hub just like the stock rotor, to the back of the hub. Then install this to the spindle. (new bearings ans seals would be a good idea)
Next, bolt up the caliper and check clearances.
I had to grind down my caliper slightly for wheel clearance and relocate the wheel weights as the caliper is a snug fit inside the wheel. My wheels actually have a slight taper from the inside of the rim to the center. A different wheel I had around did not have a clearance issue, so be sure to double check everything.
If people are interested, I will post the part #'s and other info (bolt sizes-lenghts, brake fittings, etc..) I hope this gives another option for updating our brakes.
Mark
Stickerman, what holes are you talking about? The hat, as supplied from Wilwood has a center bore of 2.5" or something like that and the lug patern is 4 on 4. Wilwood does offer this hat in the same offset with no lug holes drilled. This is what got me thinking about asking if they can supply it with a center bore of 2.9-3" and drill the lug pattern for 4 on 4 1/2". A group buy may not be a bad idea. If we can put together enough orders, they may be willing to do the machining and sell to us for the list price and we would save the cost and problem of having it machined after purchase. I will ask if this is a possibility on Monday. The other stuff is off the shelf stuff, so is not an issue. Linda, care to head up the group buy? 
j/k