Just installed a new driveshaft: "PTS Carbon Fiber Driveshaft"... No more vibrations at all and the best thing is: The carbon fiber driveshaft took out 95% of that hideous play you fell every time you shift or you gently press on the gas, let off and press again ==> no more terrible Mustang "CLUNK", no more special shifting needed, you shift into gear, accelerate and feel the instantaneous power transfer :rockon: