1987 Mazda B2200 New Engine

My very high mileage 1987 Mazda B2200 is getting a remanufactured long block engine.
Which parts do you suggest replacing when we do the install? There are a lot of little hoses and lines that could be plugged, or that have become crunchy over the years.
I want to change everything that might give me grief, so any suggestions would be very helpful!