Scotty, my 2002 F350 with 88K has a clunking noise when accelerating in high gear. All drive line components have been replaced (with high quality parts) as well as the manual transmission mount. I do not experience issue while shifting up, just while running down the highway. Example, if in overdrive and I let off the excellerator then back on, the clunk will be experienced. Thank you for your help.

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