Patent pending SoloSwap® is compatible with all Gen III Hemi engine bolt-ons such as intake manifolds, headers, and oil pan, which makes positioning or fabricating engine mounts a breeze, Weighing in at 20 pounds for the short block or 38 pounds for the long block, this Gen III Hemi mock up engine can be lifted in and out of the vehicle by one person without the need for an engine hoist, Replicates all Gen III Hemi engines, including 5.7L, 6.1L, 6.2L, and 6.4L, stock and aftermarket blocks and heads, Heavy duty 12 gauge steel construction is designed to last unlike the Gen III Hemi foam block which often suffers damage from thread inserts pulling out of the foam core, SoloSwap® long block version comes with bolt on fabricated steel mock up heads | Short block version accepts all factory an.