Kit includes: 426-1AS Head Assembly, 426-15 Valve Cover Bolts, 426-27 IN & EX Rocker Arms, 426-22 or -23 Head Stud Kit, 426-10 Shaft Clamp Kit, 426-27SP Rocker Side Springs, 426-12 Valve Covers, 426-29 Thick Wall Rocker Shafts, 426-27S120 Rocker Side Shims, 426-28K Push Rod Kit ,440-6R Removable Valley Plate , 426-27S060 Rocker Side Shims, 426-24 Manifold Bolt Kit, 426-2 or 3 Manifold, 426-27R Shaft Oil Restrictors, 426-18 Tube O-Rings, 426-17 Sparkplug Tubes, 426-30 Complete Fel-Pro Gasket Kit.