The knock sensors are Bosch 0261231188, one for each bank, and the connectors are EV1. I had to ream out the through-hole for the 3/8" bolt, IIRC the sensor bolt holes are 8mm. I'm using a Terminator X ecu.
Edit: To expand on the sensor selection, I chose these sensors because of the mounting style and supposedly they are non-resonant sensors that will pick up all frequencies, and can filter the frequency through the TermX. Bosch Motorsport also makes knock sensors that look externally very similar to these OEM ones, but they are much more expensive. If these don't work out I will pick up the Motorsport ones later, maybe.