Procomp = junk!
1sicbu ran them on his car and kept cracking one of the water jackets.
Mr. Fast is using a procomp water pump, brand new out of the box it leaked! Sent back to procomp....they sent him another one that one leaked right off the UPS truck! We took it apart and used the custom RTV fix to get it to stop leaking
Google procomp junk and see what comes up (we tried it after the water pump ordeal, some funny stuff comes up)
You get what you pay for IMO.