So, I was having issues with my cooling system. On a cold start, it would act like the thermostat would not open. The temp would go up to 240ish and I would shut the car off. I wouldn't have heat at this point either. Eventually the temp would drop down, I would get heat, and it would be fine. It would not over heat after that but the temperature would fluxuate 15-20*. The whole time I could hear the pump running and I bleeded the crap out of the system.
I changed the rad cap, thermo, ran a pressure test on the system, combustion gas die test, checked flow in all directions to find a blockage and hooked the pump up to 12v not mounted to make sure it spun.

Finally I just swapped the stock WP back on and problem solved. I noticed a much better flow looking in the rad cap and I had heat much sooner.

Just a FYI cause I've never seen any info on one failing.

Meziere said they would rebuild it for $150 too.