For 1987, 1989 GMC R2500 Rocker Arm Kit 93826SVFR Rocker Arm Stock

For 1987, 1989 GMC R2500 Rocker Arm Kit 44688JBHG Rocker Arm Stock

For 1987, 1989 GMC R2500 Rocker Arm 71299VDTK Stock

For 1987, 1989 GMC R2500 Rocker Arm Kit 74132QZ Rocker Arm Stock

For 1987-1988 GMC R2500 Rocker Arm Kit 72438XYGC Rocker Arm Stock

For 1987-1989 GMC R2500 Rocker Arm Ball 49166TNRQ 1988 7.4L V8 OHV Stock

For 1987-1988 GMC R2500 Rocker Arm 75137XHWZ Stock -- without Rail

For 1987-1989 GMC R2500 Rocker Arm Ball 79672FZFR 1988 7.4L V8 OHV Stock