front pipe No1 is located between exhaust mainfold and box tail pipe.
When replacing the front pipe you may also need:
2x sealing crush ring.
2x pipe fixing bolts.
3x manifold studs.
3x manifold nuts.
2x rubber mountings (2 hole)
1x mounting rubber up to 10/1993
1x mounting rubber from 10/1993
1x exhaust paste.
(see parts diagram)