Yes and no. The early headlight BULB is lower wattage than the late bulb. The headlights and mounts themselves are identical. The early system doesn't support the higher wattage bulb very well, so just replace it with a 35/35W.
Turn signals are all the same except for '87. Just make sure you get front signals. They have 3 wires and use 1157 bulbs due to the running light feature. The rears have only two wires and use an 1156 bulb.