Can you help me pick a good service manual? I don't like the gm one. Maybe I can't read. However, I like what I read in the old Motor's Service Truck manual. It really gets down to it. I like to "upgrade" on a few parts here and there on my 55.1 and like to know how to install parts from say a 63. Things like pcv or radiator overflow, or fuel/vac pump etc. My question is "What range of years is best when buying a Motor's service manual that would cover my truck and a few surrounding years that would be most useful." Thanks - Scott