MoPar Brake Upgrade Options?

What I would really like a 13 or 14 inch disk brake kit that uses my '73 and up spindles. The only choice really is Doctor Diff's kit, which isn't a bad choice actually.

That stuff has existed for at least 10 years if not more. I think I did my first 13 inch front brake kit back around the year 2000. I have 13 inch Baer rotors on one car with Porsche calipers. The other car has 13 inch Baer rotors with Viper calipers. Both cars use FMJ knuckles.
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