Only the Poms would think of making a gearshift gate that built in a delay, so the driver couldn't shift into reverse too quickly and maybe damage the transmission.
If you love trucks, restore them. The "patina" fad today only exists because people are too cheap or sloppy or lazy to do it right. It wouldn't have been a rusty shitbox in service.
The owner seems to know his stuff, but ! The Scammell looks badly neglected, he won’t be restoring that, there’s allot of other tat around his yard just rotting...
I worked on the Rolls Royce diesels as an apprentice, most were the supercharged version (C range 4,6 ,and 8's ) but we also swapped them out for Cummins .The Rollers were beautifully made but as he says they were a bit tentative performance wise, so when the Cummins were installed they were a touch overpowered..ha ha en.wikipedia.org/wiki/Rolls-Royce_C_range_engines