Toyota Hiace Owner's Manual page 7

Check the model code to see what type of model your vehicle is.
Basic code
RZH103, RZH113, RZH125:
Models with 2RZ−E engine
LH162, LH172, LH184:
Models with 5L engine
R Z H 1 0 3
0, 6: Standard wheelbase
1, 7: Long wheelbase
2, 8: Super long wheelbase
The model code appears on the manufacturer's plate with the heading "MODEL".
See "Your Toyota's identification" in Section 2 for the manufacturer's plate location.
Model code
− R
Wheelbase
vi
Body type
R: Van
Z: Commuter