Hi there, not sure if I will get any of the info I am seeking, but it's worth a shot. I have a question regarding my 97' Park Ave Ultra. I have been looking for any kind of information in regards to what brakes I can swap over from a better trim level/chassis type. If I am understanding correctly, Bonneville GXP brakes should possibly swap over, and if all goes well, I should be picking up a set of those calipers soon to test fit. I currently have 17" twisted Comp G wheels on the car to clear larger breaks. I was wondering if CTS-V brakes would fit by chance, or if anyone could offer any kind of insight into this. Such as, what can all interchange over like calipers, brackets, etc....for the front and rear brakes. Coilovers will be another fun project in the future, but lets not get too far ahead. Me and a handful of guys are pretty much in the dark on this platform. Drivetrain information is plentiful, of course, everything else.....not so much. Thanks much.