[4 Wheelin Fudpucker]

Boxing was done to 4 banger old 20s and 30s frames to make them stiff enough to handle V-8s.
Most modern truck frames are rated for both 6 and 8 cylinder engines.
Chain and a turn buckle on the left side of the motor would be a faster, cheaper and do the trick mod for extra HP.

In all my years Ive planted a lot of V-8s in rigs that didnt come with them. ONLY my 1930 Ford coupe got boxed.