Complete LT Swap Mock-Up Solution – Patent-pending SoloSwap® design replicates Gen V LT engine dimensions to simplify engine mounting, header fabrication, and clearance checks, Accepts Factory & Aftermarket LT Bolt-Ons – Compatible with intake manifolds, headers, oil pans, timing covers, accessory drives, valve covers, and more, Lightweight & Easy to Handle – Long block weighs approx. 35 lbs. and can be lifted into the engine bay by one person, eliminating the need for an engine hoist during mock-up, Durable 12-Gauge Steel Construction – Unlike foam mock blocks that deform or strip inserts, this steel mock-up is built to withstand repeated test fitting and hardware installation, Long Block Head Support Included – Comes with fabricated steel mock-up heads allowing accurate placement of mani.