Does anyone know what is needed to install the stock brembos from the sport onto the sedan? Or if it can be done at all?

 

I think its a direct fit

 

you just need the Brembo caliper bolts

 

Just to be sure are the rotors the same?

All I should need are
Brembo Calipers
Brake Pads
Mounting bolts

 

So from the research I've done I'll also need new rear rotors as they are bigger.
I also found out that the master cylinders between the sport and regular are different sizes, has anyone changed to the larger size?

 

it also looks like the rear break lines are different.

 

What are you doing for the fronts? I can't see a rear bbk only swap helping anything but to make you do 180s.

 

I have Project Mu BBks up front, I just found the rear brembos for a good price and thought it would round things out nicely

 

You need to figure out of the increased bias to the rear is going to screw up the front/rear bias values.

 

I would figure that they are already screwed up having the bbk installed and would assume that adding the rears would actually bring it closer to where it should be. Either that or I should really install the Sports master cylinder too which is already biased for 4pot front 2 pot rear. But then that brings up the issue of the break booster and if it would be worth it to change that as well since it is different also.

Really I think that I have change anything but the rear brakes/rotors/lines.

 

Not all front only bbks are poorly designed. Stop tech has a front only kit that's designed around only being a front only kit.