Oh, since it is going into a 95 (OBD1), then you will want to use the 92-95 distributor with the seperate coil on the firewall. If you have (or buy) just the distributor housing on the head, you could go ahead and seal it up, then just stab your disty in, when you install the engine. It would save buying another disty.
That 98 should also have a crank sensor on the front of the oil pan, so you could either swap a 92-95 oil pan on it, or just leave it as is and not worry about plugging anything into it.
That is all I can think of, that is different between a 98 and 95.