best passive pickups for distortion and fun

BEST Passive Bridge = Duncan JB, followed in close 2nd by the Duncan Distortion.

Neck = Duncan Jazz or Duncan Pearly Gates, depending on how "glassy" or "full" you want your neck tone to be.

That said... If you want that tight "Sylosis-esque" response, install the EMG 81 in the Bridge, and either an 85, 89, or 60 in the neck, depending (again) on what kind of neck tone you want.
 
YMMV but for me:
Bridge = Dimarzio Tone Zone
Neck = Dimarzio Air Norton or LiquiFire

But it all depends on the guitar you put them in.
 
APC's all the way. Tight, quiet, balanced, plenty of note definition and a high output for a passive I might say. They sound like EMG's with some actual tone.