If being able to adjust cam timing quickly and easily is a top priority, then Comp Cams Ultimate Adjustable Billet Timing Sets could be the answer. They have 2-piece billet steel cam sprockets, which let you change cam timing without removing the degree wheel or releasing the valvetrain load. There's no cam bushing to break, and timing can be adjusted from 6° retard to 6° advance. Chains are heavy-duty, double-row types with hefty 0.250" rollers. A one-piece roller thrust bearing handles unwanted end loads.