Recently I have upgraded a 2000 model civic which includes ABS setup.
Before doing the engine and rewiring work along with redoing the interior, I bought complete ABS equipped suspension setup including complete braking system this includes axels with tone ring, ABS modulator, all brake lines in the engine bay, proportioning valve, booster + MC set and ABS controller. It costed me 60k in year 2017.
This complete setup was installed in the same year (2017) and it was all plug and play without any improvisation required.
ABS controller was, however, not connected due to missing wiring harness so all the electrical connectors remained unplugged till the start of this year when remaining stuff was also bought and installed.
During this period brakes were working properly but obviously without ABS.