Can I put rear disk brakes on my car?

From RPRWiki

Yes, but you will need to graft the rear axle from a 1st Gen Integra onto your car to make it happen. Another alternative is to replace the iron rear drums with aluminum drums from the HF model. This saves weight and works just as well as the Integra rear disks. You will have to change the rear brake backing plate to a HF plate to make the aluminum drums fit, but that is a relatively easy job.