Pump, HX and CDU hardware to use with a CryoBlock S19j Pro

Does anyone have a favorite pump and heat exchanger they like to use with a CryoBlock converted S19jPro? @Cody what did you do for yours? And does it need an expansion tank reservoir? This is my first time getting my hands dirty with hydro.

@Cody I think your reply to this didn’t show up because our server got restarted right after you replied. I think I briefly saw a notification from you. Did you respond? Can you restate which pump you used?