Stay with your original stub axle (CVCC/1200 are the same) you get yourself a caliper bracket from a ’84-’87 prelude Si.
You then also need the caliper bracket from the Honda Prelude (due to close mounting holes)
You can use the later calipers but must have the Honda Prelude caliper brackets (the caliper spacing is all the same on the two mounting studs).
You can use any rear hub from a civic ’88 and newer the only difference is that rear disc hubs have the threaded locations to bolt the disc in place.
Machine the outer lip to accept the 1st gen outer bearing, and then place washers between the new outer bearing and the original inside bearing (this is required so the bearings are not crushed when tightened). You also need to double up the factory collar, in order to center the rotor in the caliper. The washer’s that go between the two bearings only need to be as big as the 1200 outer bearing (inside diameter to fit the shaft) the outside diameter must be smaller than the 1200 outer bearing, it will act as a cushion when you tighten down the nut.
Run the caliper on the backside of the rotor, the emergency brake mounting bracket is not used, you can use your original brake line hole as e brake cable mount, the brake cables can be used from any Honda with rear disc. You also need the e-brake handle and cable.
No bias control is needed. the braking is perfectly matched. the stock master works fine, but for even better braking power, upgrade the master to a ‘1986-‘1989 Acura legend booster/master, it’s either a 7/8 or 15/16 bore. it’s a bolt on, the only thing required is re-bending the brake lines to the opposite side of the master and enlarging the holes in the firewall one size bigger.
If you’re doing the rear disc swap on a wagon, you need to find rear hubs from a ‘1990-‘1993 Integra (larger inner diameter bearing) and then machine the outer to accept your wagon outer bearing (you still need the washer’s between the bearings like on the 1200), the backing plate that bolts to your hub will need the holes enlarged to bolt up, I ended up using my factory e brake cable on the wagon, no need to replace it.