WARNING: This page is about a different car, the 2005 Subaru Baja. However, it is still accessible from the selected car via links, so may be relevant.
Install in the reverse order of removal.
Tightening torque:
16 N.m (1.6 kgf-m, 11.6 ft-lb)
Fig 1: Removing Bolt Which Secures Intercooler To Bracket (1 Of 2)
Courtesy of SUBARU OF AMERICA, INC.
Fig 2: Removing Bolt Which Secures Intercooler To Bracket (2 Of 2)