OK- here's a small update. I realized that I had tried both ignition modules with the wiring to the coil backwards, so if I fried one module, I fried both the old and the new.

I got a brand new bosch module, part 0227100124, and plugged it in. Still the exact same symptoms. The coil still fires constantly when I put the car in KPII. My thought process is this- if it is getting a signal to ground constantly, it would fire. The question is, how do I tell where or what is telling it to ground? Is it the crank position sensor telling the ICU to ground all the time, or is it the ICU itself? More testing will tell, I guess. Any ideas what the CPS voltage or resistance values are supposed to be for an LH 2.2 V6 car?

I'd just try a new ECU and EZK if they weren't the stupidly rare V6 versions...