Sorry. The 87 and 88 coolant tubes are the same at the rear, but different at the front.
With that said, an 87 tube can probably be "sectioned" and the rear half connected to the front half of the 88 tube with a piece of hose and some clamps. (I'm guessing that someone tried to jack up the car and crushed the tube at the rear. I have one of those, myself.)