The best way to do it is to tear every bit of wiring out of the car and plug in wiring and drivetrain and a whole bunch of other crap from a newer car in. This is what I did with my 1993 L wagon. It's essentially a 1993 shell transplanted into a 2001 OBS- literally everything that can be removed and replaced was. However, this is a crap-ton of work and requires acquiring a complete donor car. You could also try just getting an engine plus engine and bulkhead wiring harnesses and splicing them together, but that's worse than the complete swap IMO. Way more room for things to go wrong.
I'm trying to remember if your motor is Phase I or Phase II. If it is Phase II, then you can just take a 2.5 longblock and toss it in, bolt your intake manifold back up to it and switch a couple sensors for the cam and crank. But I think it's Phase I, and I think the Phase I intake manifolds don't swap with Phase II.
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FWD is the new AWD
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