It has part numbers listed with years and applications. The #1 is general engine, cooling, drivetrain parts. #2 has misc. parts apps. Suspension,fans and belts and hoses,flywheel, exhaust, jack, fuel solenoids and the like. #1 is the one you want to start out with. if you can find one. I have an old 3rd printing one from 1991ok, I just bought this one. What is the parts interchange volume 1 you talk about in #24. this another book. thanks