There are a couple great gen 2 to 3 efi swap threads on
www.mr2oc.com
You will need to repin the harness at the ecu or have a jumper harness made by berk technologies.
You'll also need a map, ignitor (rpm limit will be lower if not changed), iat sensor and manifold temp sensor. The mat and iat sensors can be wired into the AFM harness, with these wires being repinned at the ecu.
The mat can take the place of the cold start injector using an adapter plate.
You mentioned you already have 205 injectors.
I think that's all, I did this swap 4 years ago and it was the best upgrade I've ever done.