318 EFI to -66 Dart

I have 318EFI and complete wiring harness from -90 Van and I´m going to put them in my -66 Dart. Engine swap is easy :grin: ( have v8 centerlink, exhaust manifolds, engine mounts and oil pan already) but electrical...
Is it possible (easily) to separate compu and what else is needed and put them together with original wiring?