Although there is no direct link between your models and global models of the ranger you might be able to find something to suite at one of these web sites. ARB 4x4 Accessories
(safari snorkels), TJM - Serious 4WD Equipment > Home
(airtec snorkels), Opposite Lock Australia
(airflow snorkels). These companys also do bullbars, sidebars etc. The courier is the closest body shape to yours and did offer a petrol version for a little while. When we switched to the ranger branding ford Aus also dropped the petrol motors as the diesel's far outsold the petrol's. The new model comming will reintroduce a petrol to the line up. The petrols breathe through the right gaurd and the diesels through the left gaurd thats the only difference as far as a snorkel for a courier/ranger goes.