Fully rebuilt Cummins motor ready to slot back into the space originally designed for a Rolls Royce R-type motor, and more famously a returned 4.2 litre Jaguar
This is to have something to populate the ‘parts for sale’ area, and that’s my best guess from the stud pattern and the splined drive. We can add additional details, including price, right up to and including selling the item with stock control.