I've read some threads about it and the general consensus is that it would be very difficult to do and not worth the cost/effort. I have not read that anyone on this forum had done it. It was a disappointment to me that Bonnevilles did not have discs on the back even as an option. I know someone is going to chime in and say they are not needed, the front does most of the braking...yada, yada, yada. Fact remains, discs are a far better set up, and I can't believe they would have cost that much more to put on the car.
1999 SSE. 108K. Cleared Corners, Mobile 1, Energy Suspension endlinks. Ported and Polished LIM, NGK TR-55 Sparkplugs, 180 drilled Intense stat, Flow matched injectors, Intense FWI, Intense PCM, MagnaFlow Cat.