GrimmSpeed 93-07 Impreza/WRX/STi Master Cylinder Brace - Manual (Page 3)

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6. Locate the two additional strut tower mounting holes that will be used by the brace.
Some models will have an A/C bracket that is attached with a 10mm bolt. You will need to
remove this bolt and the brace will slide behind this bracket. Some models will have a plastic
clip that is clipped into one of the threaded holes you will need for the brace.
7. Inspect the OEM threaded body holes on the strut tower. If threads are rusty, run an M6 x
1 tap to clean the threads before installing brace. You will also want to use a small amount
of anti-seize on the bolts.
8. Move brace into position. Using the supplied hardware hand thread the 4 bolts that line up
with the factory captive nuts. You will need to reinstall the factory fuel filter bracket (early
models) or fuel line bracket (later models).
9. Tighten all 4 bolts using a 10mm socket to 15 ft-lbs.