Admittedly, the RAVE information is a bit lacklustre with regards to Timing Chain replacement, but it does detail how to remove the Timing Co er and Gasket renewal, plus how to adjust and time the Camshafts....a combination of those will gain you access to the Timing Chains....and detail how to set the engine in the correct orientation and also details the special tools required to retime the camshafts.
Looking at it, you will also need to unmount the front of engine and support on an engine crane or similar!