(2) The only way you can tell is to jack the car up and have a look at the mount(s)
which will be on the gearbox side! and you will find that they are probly cracked and broken!
(3) the bushs in the wishbones are not replaced like that,they are replaced as a complete wishbone check to see if you have replaced these as a whole? if you havent had these replaced then you will be driving all over the place!