Since I'm in Australia, where we didn't get 4WS 5th gen Preludes I'm left wondering if they might be an upgrade; faster, lighter & smaller, for my JDM 1995 4th gen 4WS Prelude project.
The 4th gen 4WS ECU is a rather bulky monster behind the rear seats severely limiting cabin/boot access. & I know 5th gen at least had it relocated to the rear 1/4.
Tempted to get/fit a later version & possibly it's harness or Plugs if anyone in Europe were dismantling a car & it were affordable & smaller.