Lingenfelter L320030709 Lingenfelter CTS-V Intercooler Radiator Kit 2009-13 v1.1 - Manual (Page 22)

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69. Mark the locations for the holes for mounting
the power steering cooler with a scribe or
marker pen.
70. Make sure your hole locations do not line
up with the two weld marks in the bumper
beam (examples shown here).
71. Using a punch, mark the center of the holes.
Now drill out the holes using the supplied #2
carbide drill bit.
Note: If you break or loose the supplied drill
bit, it is recommended to use a carbide drill
bit or have a few brand new drill bits as they
will become dull quickly when trying to drill
into the hardened steel.
72. Cut the supplied 3/8” hose (PN: H1937) into
two sections of equal lenth (24” each).