WARNING: This page is about a different car, the 2007 Mazda B3000, 2006 Mazda B3000, 2005 Mazda B3000, 2004 Mazda B3000, and 2003 Mazda B3000. However, it is still accessible from the selected car via links, so may be relevant.
Assemble in reverse order of disassembly.
Lubricate the valve stem and the valve stem seal with clean engine oil.
Fig 1: Exhaust Manifold Bolt Tightening Sequence With Torque Specifications