I spun a bearing in my '96 civic hx and have replaced it with a '94 d16z6 junkyard motor. I used the wiring harness from the chassis, and used the d16y5 intake manifold so all the plugs line up exactly. The '94 doesn't have a crank fluctuation sensor. That's the only sensor not plugged in. I started the car on my original p2n ecu without issue, and have been driving on it for a couple days. It feels solid, no misfires or hiccups thus far. What issues could I encounter? Will the motor run lean on the p2n ecu vs. a p28? This car is just my daily driver/beater!