You may find though that a Red Top, 20V or 4AGZE engine are the only available choices to you.
The Blue Top RWD 4AGE motor is hard to find in good condition these days & many wreckers don't touch them as there are later 4AG engines available and these are an 18 yr old engine with high milege in most cases.
Don't forget that apart from fitting in the engine, there's also more $$$ thrown at braking, fuel system, aftermarket computer, cooling (if 4AGZE), exhaust etc.
Budget around $6K including parts & labour if you're getting someone else to do it and you can't go wrong ... I think ...