I want to try and upgrade my brakes could i use the brakes off of another cadi like a cts-v? And what exactly would i have to swap out to be able to make them work? Unless i can order a larger, aftermarket brake kit for a SLS

 

Try http://brakeperformance.com, http://www.horsepowerfreaks.comand http://www.topbrakes.com for performance rotorsand pads.
http://www.xrcbrakes.comhas rotors, pads and calipers, although they may not have front calipers, which is what you probably need and want.
I have nottried any of these systems so cannot vouch for them. The top names (Baer and Wilwood) do not make systems for the older Cadillacs.
Keith
1995 SLS