on this 85 the air cleaner is not over the turbo it is a taller smaller in circumference guy in front of the turbo, that said its not the air cleaner housing. the turbo, visibly is shaking faster than the rest of the motor and it is loud. I have tried putting the butt end of a broomstick on it, it just deadens it a little and vibrates the hell out of the stick. all bolts look tight. if impeller blades are broke, would a junk yard swap be easier than renewing the broken one, what is compatability like on the turbo units ?

Thanks
John