http://www.cygnusx1.net/Supra/TechTips/vacuum_hose.aspx
One thing the diagrams don't show is the Cruise Control, and Heater Water Valve vacuum hoses.
A hose comes off the back end of the intake manifold (straight towards the firewall) to a plastic 'T'. Then one hose goes to the heater valve, and the other to the cruise control vacuum motor.