Those are motor mounts. They absorb movement
and for first one, is this rust harmful or i can live with it?
Check the condition of the bushing on the inside if the mount , if it shows signs of wear , replace it . for the metal part you have nothing to worry about. If you care you could always sand off the rust and paint it .and for first one, is this rust harmful or i can live with it?
the strange thing is, I found the Nissan Sunny (lower/smaller model than the Versa) has ABS!!!My car does not have abs and has that brake manifold. I think its odd they sold SL's without ABS.