cobrarkc,
I have the same rear vented brake setup as ERA Chas. It uses the Jag calipers with spacers and the Jag e-brakes. It is not a completely simple install, but works really really well on the street and on the track. It has over 25,000 miles on it and I'm on my second set of rear pads. Maybe the third, I forget, track use does put extra stress on them
Here's what it looked like when it was new:
I also use the Wilwood manual proportioning valve. The knob sticks through the floor at drivers right to allow on-the-track adjustment. I've found once I adjusted it to prevent rear lockup, I didn't need to do it again.
Dunno if Mike still makes this setup. If so, it's expensive but worth it in my view.
Tom