B18B1 head interchangeability

[fliptuner]

I know 94/95 are OBD1, 96-99 are OBD2a and 00/01 are OBD2b and the latter 2 use a crank sensor.

I'm wondering if all the heads are the same or are close enough that they can be interchanged?

Thanks

[ajmichelson]

Yes they are interchangeable minus a few wires that need to be changed and a couple changes in sensors, but it is compatible overall.

[jasonturbo]

The physical head itself is identical.