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Message: <blockquote data-quote="Jhollowell" data-source="post: 2069052" data-attributes="member: 20013"><p>I don't know what the IFP bottoming sounds like but that could be the culprit.  If you bottomed the IFP out when you installed the main shaft, that could be the cause.  After i cycle the IFP a few times to bleed the air, i pull it up a few inches, then install the shaft and top cap.  If you filled it with at least 28oz you shouldn't bottom the IFP.  If you can replicate it in the driveway i would have someone bounce in your bed as you lay under the truck and see if you can hear where its coming from.  Replacing the rear bushings is a nightmare unless you can make a tapered sleeve tool to press the bushing in.  otherwise you'll be hating life, ask me how i know.  Is it happening on the front as well or just rear?  i had a clunk in the front that was caused by a loose shaft nut.</p></blockquote><p></p>