I was looking into them a few months ago. Seems like a good kit, but there aren't a whole lot of people who run them. There are a few on this board as well as a few other boards that run the Mustang Steve kits.
Personally, I will be most likely goign with the Daze Cars kit for the front and the UltraStang kit in the rear. They both allow you to run the SN-95 (99-04) V6/GT Two Piston calibers and smaller disc rotors. Plenty of braking power and lets you run the 15" rims, which I personally prefer to the 17" rims on the classics.
Either decision you make, Mustang Steve or Vintage Venom will work good.
-Edgar