Well I had a post about a vibration at around 40 mph. After I did u-joints and hanger bearing it was still there no difference. Finally after taking some angle measurements on the shafts I noticed my rear was kicked up 5 degrees higher because of the tapered lift blocks. Ordered a block/traction bar setup from PMF and finished installing this morning. Ordered the blocks to be flat and the rear is right were it should be. Vibration basically gone completely and no more clunk when I take off or stop. Great well built product and thank you Trevor for all the help.