For rack idle pin, see the following links:
Rack Dampener adjusting bolt
The turbo drain grommets refer to the rubber parts sealing the turbo oil return tube. The tube has two sections. The upper section is mounted to the bottom of the turbocharger via two bolts. Continue down the upper section is the lower section which ends at the oil pan. There is a rubber o-ring on top of the lower section where the top and bottom sections meet. There is a rubber grommet on top of the oil pan where the lower section enters. There is also an o-ring at the bottom end of the lower section inside the oil pan below the grommet.