New computer for my 98 sunfire...

my 98 sunfire engine was replaced with an 02 engine, GREAT!! Except the idiot who did it left the old engine's Computer in it, not to mention all the wiring is from the 98, including the fuel rod. The idiot was my mom's husband, and he thinks my car has a carborator!!! AHH hahaha, I know nothing about cars, but my car is fuel injected. From what I've been told, there is no carb. In any case my question is as follows:
Q: I need an 02 computer for my car, where do I get, and for how much?

You can usually find them in junkyard Sunfires. That would be your best bet...as for where they are in the car...I have no idea, sorry.

But you might need to also get a wiring harness from the 02 model as well.

And, please inform you mom's husband that we've evolved past the black magic of carbourators and attempting to get a diecent air:fuel ratio out of them.

there are no sunfire junkyards here in edmonton, and I already have the wiring harness for the 02 model engine, what I need is the Computer.

I think the BCM is also needed, as well as the guage cluster for an 02, and some other stuffs. the computer talks to the BCM, which makes sure the antitheft is right as well as the guage cluster, and think the tranny has a computer as well LOL if it's an auto.

It is an auto, what is a BCM?

Mostly you can find computer head on Ebay.used one is much cheaper. I don't kown what's the BCM or what does it do.