The 53/54 passenger cars with power steering had two pulleys but like alot of this stuff, hens teeth. Some time back the Inliner's Newsletter had a small article on modifying a 292 three gruve pulley for use on 235/261. This amounted to turning off the BACK gruve on a lathe, thus making it suitable for the 235. At that time you could still get this 292 3 gruve new from Chevy.
