Hi members, I've got this kit which is pictured below that I want to install in my 2002 silverado 5.3, but it seems I'm missing the crank pulley. Where and for how much does it run for? What else do you guys think I need? I really want to put this in my truck and I've been having trouble figuring out what else I need. I'll appreciate any help/orientation to what to do or need. I've also heard something about crank pinning or something like that, but I really don't know much about this deal Thanks

That might be tricky, Whipple switched to a single belt arrangement long ago. Not sure they'll still have those parts available. You'll need the crank pulley, spacer, and bolts. It might be worth the effort to look at other supercharger kits for the 4.8/5.3/6.0 that use an auxiliary crank pulley - if the parts are available perhaps the spacer could be milled to the right thickness to make it all compatible with your kit.
I would recommend "pinning" your crankshaft and dampener. The dampener on Gen-III/IV SBC is not keyed like classic smallblocks and big blocks, it's just a tolerance fit. The additional torque load on the front drive can actually cause it to slip and spin on the crank snout.

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"James B." '99LT_Tahoe4Dr2WD, Tuned L29 Vortec 454, 62#Injectors, Cutouts, 4L80-E 10.5"14bolt ,EatonPosi-4.56:1, Gear_Vendors, HydroBoost, (NEXT: Brodix heads, 230/240 cam, SS roller rockers, longtubes, THEN: Intercooled W200R-8psi in the future...)