To use your Cadac Safari Chef 2 with a gas cartridge you will need to convert it from LP to HP.
You cannot convert Cadac Safari Chef 2 HP to LP.
Converting Safari Chef 2 LP, Lite & Ultimate to HP
To convert your LP Cadac BBQ to HP you will need a Cadac EN417 Regulator Assembly.
Simply screw onto the cartridge. The EN417 Regulator Assembly includes a hose and tailpiece.
The tailpiece fits a ¼" BSP left hand threaded gas cartridge.
Converting Safari Chef 2 Pro to HP
The Safari Chef 2 Pro QR comes with an integrated Cadac Quick Release Tailpiece, so to convert it to HP you will need a Cadac EN417 Regulator Assembly QR.