Yes,there are differences so beware.
You need a pre 1990 facelift bonnet as the edge of a pre 1990 bonnet is kicked up from n/s to o/s.
A later bonnet is kicked up for around 10 cm then goes flat,look at your 4wd bonnet,a post 1990 non vented bonnet is exactly the same and wrong for an earlier car.
Apart from that they are the same,prob finding 1 with an 1998/89 date stamp beside the latch will easily identify the right bonnet.
Very hard to find when you are looking for 1,when you stop there are loads ha ha.