There was a guy in the bmw e30 community who was disassembling, ultrasonic cleaning and rebuilding the ABS pump for the e30 era BMWs. It was amazing how funky those pump insides were, ports were clogged, corrosion etc. I think he was selling them for $800-$1,000?
I'm curious to see what you come up with if you end up rebuilding a pump.
