i have 94 integra gsr and got a 2000 gsr motor. what's the differences between engine harnesses and intake manifold and distributor. i heard i need all of these plus a obd1 p72 ecu. i'm hoping to have a legal car smog wise but all this obd crap is making it hard. i heard it's all plug and play except a couple wires are left unplugged. what all do i need to make this baby fire. thank you all.
PLEASE HELP ME

 

If your 1994 motor is blown, then all you need to do is drop in the longblock using the sensors (when different) and distributer from your 1994 motor. Since your car already came with a B18C, nobody is going to question the swap or even try to find out what year motor is in the car.

 

Just some pointers, check your fuel injectors, your alternator and your Distributor your might need a Jumper Harness.

 

Just some pointers, use your old fuel injectors, alternator and Distributor from your old motor. The new ones might not plug into your Obd1 engine harness.