i have an 85 300zx turbo 2 seater. i was told i have bad u-joints because when i go over 45mopg the shifter will shake and so will the car. and also when i shift it clunks. the problewm is they dont sell u joints septeralty and there is no junk yars with any driveshaft parts for a 300 around. anyone have parts i could maybe buy? some1 please help!