69HemiBeep I have some on my 68 RR BB wedge, pieced together one on the power steering {it's a Unisteer rack & pinion}, my alternator & lower crankshaft pulley, are March Ind. serpentine I got them from {March Industries, from Magnum Force Racing} & an idler for my power steering from Magnum Force Racing all 6 rib Serpentine, March dual crank pulley was like $130ish, the alternator was like $50ish, the idler was like $40ish, the bolt-on power-steering pump from Unisteer had a serpentine pulley already, they are like $40ish too IIRC, belts were relatively cheap like $20ish each X 2, I got them from Summit Racing, no water-pump serpentine pulley, I have an electric water pump & fans which you don't have to do, but that's why I used a idler pulley, to clear the bely under the water pump.. I have about $270ish in my set-up, I had to space out the alternator some & made a custom 7075 aluminum bracket to mount the idler pulley & space the power-steering pump properly, I got some various sized 3/8" hole chrome spacers from Orchard Supply Hardware & a couple of washers for shims here & there, some new stainless bolts for hardware for the water pump & alt., power steering mt.'s another $40ish so about $310ish + a little fab time & hardware, in my serpentine belt set-up...