Ignition Key Lock: Replacement

Disconnect the ground cable from battery.
Remove the steering column. Ref. to REMOVAL , Tilt Steering Column.
Secure the steering column in a vise. Remove the bolt with a drill.

Fig 1: Drilling Steering Bolt
Courtesy of SUBARU OF AMERICA, INC.
Remove the ignition key lock.
Using a new bolt, tighten the bolts (until the bolt head is wrenched off).

Fig 2: Identifying Ignition Key Lock Bolts
Courtesy of SUBARU OF AMERICA, INC.