Hey Steve,
Unique's # is (256) 546-3708 - web site is
Unique Motorcars.
I have has a few conversations with Maurice and given him some measurments from my Butler and he thought it would work.
Personally, I am leaning toward the Hawk unit. I have talked to Ron Butler and he personally recommended it. He has used several and also said that using Chevy rotors with Wilwood calipers is the set-up. There is also the cost difference - $1400 vs $3000. And lastly, my cross member is welded to the frame, so utilizing it verses cutting it out to get the Unique unit in is a big factor.
Let us know how it goes, and get some pic's posted so we can see your car.
Good luck,