Rear Disc Brake Conversion

This will be my next upgrade.... are there some more inputs of the Jeep disc brakes available? Do the come with e-brakes. Is this a simple bolt-on on a 8 3/4 with BBP? And maybe, that would be the biggest favor, I might need someone who can help me with sourcing the parts I can't buy locally ( Germany ), for example mounting plates, brackets, calipers. Discs and pads is easy to get :) but parts you need a donor car for .... :(
And what its good for? Safe braking on Autobahn if you have an HEMI in your Dart ;)