Cool elevation.
You could leave the bottom flange of the (2) 18" I beams exposed... instead of an engine hoist use a "ladder beam" rolling on the bottom flange with a pulley/block and tackle/winch? whatever for jerking motors...
Pulling a motor, maybe the bed, hell even the cab... ooooooh, would be cake.
Ask your Struct Engineer, it's totally doable. It's cheap to change the beam size now, if he deams it required. They over engineer most stuff by 30% or more, you probably already have enough to handle another 1000lbs easy.
You could leave the bottom flange of the (2) 18" I beams exposed... instead of an engine hoist use a "ladder beam" rolling on the bottom flange with a pulley/block and tackle/winch? whatever for jerking motors...
Pulling a motor, maybe the bed, hell even the cab... ooooooh, would be cake.
Ask your Struct Engineer, it's totally doable. It's cheap to change the beam size now, if he deams it required. They over engineer most stuff by 30% or more, you probably already have enough to handle another 1000lbs easy.