If this twin plate
The flywheels from all R32/R33 range, 2WD & 4WD, are all interchangeable, no matter the factory clutch setup (push or pull). The R32/R33 range also shares the same input shaft spline pattern. These two factors therefore mean that there are no problems in regards to physically installing the unit, purely its operation, pull or push.
Therefore as you are going to be using it in an R33 just make sure the item you are purchasing is from the R32/33 range and is a push style clutch.