Along with the new Moser 9-inch, we ditched the drums and went with aTCI rear disc kit. TCI offers several for Tri-Fives, but we wantedsomething that would suit everyday driving, not the turns of LagunaSeca. The basic kit from TCI uses GM 12x0.810-inch rotors with aninternal e-brake, which we got from Wilwood Disc Brakes and GM calipers.TCI builds its own bracket in order for the kit to bolt up. However, foreverything to work, we also had to get the proper axle flanges fromWilwood, which are the Chevy Special flanges. The basic TCI setup isnothin' fancy, but they do look and perform better than drums, which isexactly what we were looking for.