text: Well, first find out what kind of wood your cheapy guitar is.Then if you look it up and its basswood, or something decent, change some stuff around. Better tuners are always nice, nothing sucks more then bad tuners going out when your playing. I dont honestly think the nut is gonna help unless its seriously ruined. Pickups are nice, but none of this even matters if your using cheap cables, and a cheap amp too. Everything has to be good quality or theres really no point in adding to your guitar.I mean if you get let say a pair of emgs put in, they would normally be great mid-high range guitar tones, but if your amp doesnt have good distortion and sounds grainy, well your upgrade is only doing half of what it should.The cheapest thing on my list is cables-bad cables suck tone.You could also get a nice lil graphic eq, they can help a lot for a lil money.