I've got an IRS assy. out of a 2007 GTO that I am putting into a '67 C10. I have fabricated attachment points for the main front bolts (new hardware used throughout) and for the front mount brackets (#4 in the diagram below). My question is what do I make to support #13 in the diagram? The part # is 92115982. I have searched all the forums and elsewhere online and I cannot find out what #13 does. I have also looked under a few GTOs and G8s and only see that the rubber #13 is not close enough to anything to function in my opinion even if the rear assy. was to move in it's mounts to the extreme. I do not own a GTO but I own am building a Frankenstine C10 with an LQ4 converted to an L92 by way of Pace Performance bolted to a 4L80E powering the GTO rear all laying frame with air suspension. Thank you in advance for any help you may provide.
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