I used a Vortec pulley on my Procharger after I took it to a machine shop. Had them bore out the shaft hole a tiny bit and extend the slot for like $40. I was having a tough time finding a selection of 8-rib pulleys, so that was the cheapest route for me.
House of Boost has better prices but the lethal pulley looks sweet! Also like the sound of ultra grip:naughty:. I just have to look up the math formula again to get a ball park idea where my boost will be with the size pulley i get. Thxs everyone.