Originally Posted by daddiodanger
a rear brake setup from a 90si or 91si is a direct swap. you can use all the same stuff.
while you have the brake lines out it would be worthwhile to get some teflon steel braided brake lines. rotors and pads can be done anytime, but the lines will have to be bled.
if you are planning on replacing the bushings, that would also be prime time.
Thanks. It was mentioned that I could upgrade the front brakes with '91 Civic EX calipers and MC. I'm assuming this is a directs swap (no fabricating for fitment), but would that mean I'd need the EX brake booster too? Or does the EX MC bolt right up to a CRX Si brake booster?