A good DI + New strings + decent guitar with decent Pickups + podfarm + fucking around with it to get a tone you like. Then a lot of EQ to get out annoying frequencies and you should get something very close to the Sturgis tone. Also remember that the guitars in the mix would sound very different by themselves then with the drums and bass. I don't think that many people realize that a low of the punch and low end of guitars in a mix is really the bass.