Hey, not to steal the thread, but as far as the ecu is concerned, I have a P06 ecu froma manual D15B7 engine manual. I have one for sale unchipped and ready to go, $50. I'm not sure if the P05 came from a D15B7 or not...

p06 is the easiest to convert to a p28, p05 is the same as a p06 once you convert it to 4 wire o2, which isn't too tough either. 11f0 board types are the very easiest, 1720 board types require a little more work, but still nothing too difficult.