what the hell? grunge were single coils? uh. if you count nirvana as grunge...or as a band. then maybe. but since we all know they're talentless douchebags..(with the exception of dave grohl):
most grunge from the 90's era rocked humbuckers, i.e., soundgarden, alice in chains. jerry cantrell always used
seymour duncan SH4 Jeff Beck hums in his bridge. i've got one of them in a fat strat, and I have a hot rodded duncan set in my Parker that has an SH4 in the bridge and a Jazz in the neck. honestly, i'd go for the seymour duncan hot-rodded set to get a nice grungy tone. i can get a wicked alice in chains tone with my parker through the JCM and a boost pedal.
what type of grunge were you into? AIC stuff used a lot of gain; hell his setup is so ridiculous to me even when it was simple (bogner fish preamp through some sort of power amp into marshall cabs, never bothered with a head apparently, and if you see his rack setup during the Dirt era, it's kind of ridiculous) (i don't think you can say grunge era guitarists weren't gearheads...when people say grunge, they think of kurt cobain, who played single coil shits through some standard amp only because clearly he didn't care what kind of noises he made from the guitar; hell, he could barely play the thing.)
also, with telepaul mentioning above, he's the one who got me to buy
the boss SD-1, the super overdrive. it's the yellow one....also it's $40 compared to 100 something for a TS9. when i mix that with the gain from my JCM, i get a nice grungey crunchy "chukka chukka" kind of sound, then when i mix in my marshall guvnor, i get even more outta it