The 4WS has 4WS, and special "turbine" wheels. From 1988-1989 it was the only model to have the rear strut tower bar. It has an extra subrame crossmember in the front, which links the control arm mounting points together - this is only present in the MTX version though. The engines are the same as the GT.
The 626 was also available with 4WS in both hatch and sedan forms.