Unpack the rear suspension box and the IRS completion parts.
IRS Center Section
Mount the rear center section to the chassis. It installs from the bottom with the driveshaft flange
pointing straight up and the axle holes lined up front to back with the chassis. Use one rear bolt through
the rear cover to hold it in place.
Raise the front of the center section and insert a bushing under each of the front mounting bosses. Slip
one of the large washers under the bushing before setting it back down.
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