Ok I noticed my driveline vibrate under heavy acceleration and saw my center ds support was bad so got a "new" ds with good bearing and the worst of the vibration went away but I still get some. I know one of my rear shocks is bad could the shock being bad cause the car to squat during accel and cause misalignment?

Also I sometimes get an exhaust smell in the car. Could it be the rubber elbow that goes bad often?

2000 stype 3.0 auto with about 158k miles

 

I actually think I figured out the noise.. I started to change my brakes but then noticed I needed more time and help (had surgery 2 weeks ago) so decided to inspect the rear for the noise. I took the differential plug out and felt no fluid.. at all. I then took a mighty vac and started to suck what was in tjere out.. it was nasty stinky and looked like it was mixed with water.. and may of had 8-10 ounces total.. the plug had a buildup of nasty debris probably metal and such.. so I took what I could out and filled it back up.. hoping that It's not too late.