well fwd water pipes, theres one main pipe down the block, which attaches to the thermostat, and the other pipe on block, is hot water return, and is plumbed the same.
Rwd have an outlet on the head (also) and the inlet on the waterpump.
the two pipes on the block (rwd), are for heater return, and hot feed for throttle body, as well as a return from the throttle.
the sensor block on the back of the head, is used for hot heater feed, and also hot throttle feed.