You are looking at a NEW How to Rebuild GM LS Series Engines Workshop Manual: Covers all GM Gen III + Gen IV Engines From tear-down to break-in Stock and Performance Rebuilds Torque Specs + Sequences Machine Work Advice Engine Math + Measurements Features over 600 Step by-step colour photos 152 Pages Thanks for looking and don't forget to check out all of our Restoration Essentials in our store. Your parcel will have a unique tracking number which will be sent to you via email on dispatch so you can keep an eye on your delivery.