questionable sounds

[mopower]

Car Model: manual 93 240sx coupe no abs, non SE ----------------------------------------------------------------

First sound seems to be coming from under the car. When I'm driving at a very low speed (0-20mph) or when slowing down almost to (0-20mph), I hear a sound that like clicking 'crook crook crook'. Strangely when I drove the car at night just a couple of days ago, the sound was completely not there.I just changed the front strut rod and their bushings and relubed the bearings for two tires.

Second sound seems to be coming from the rear. When I hold a right turn for more than 5 secs, I would hear a high pitch whistling sound coming from the rear (driver's I think)

I posted this in the technical section as well. That was before I knew this was actually the place to post. So to the NICO moderators. I apologize.

Any help appreciated!