Ineos Automotive do not appear to have pre-prepared sub-assemblies/briefings/component lists for likely repair cases, so Chandlers are having to create a quote from scratch using the parts book, book times and repair manual. This is potentially irrecoverable labour charges if NFU do not approve the quote.
Back when I was working in the motor trade, four decades ago now, (!), most motor manufacturers would have lists/briefings/sub-assemblies for common failures. So a destroyed engine fix would be one pre-available list of parts, labour and other contingencies. What I cannot understand from the position of Ineos Automotive's self-interest is why this was not pro-actively available; a significant component in insurance rates is repair costs.
For my Grenadier, I am anticipating a short engine, head, valves, cam, bearings, seals, gaskets, intercooler, (potentially clean out rather than replace, but still needs a labour time), 2 x turbos, engine loom and ancilaries, so the list is potentially massive. What we don't know at this juncture is what else is compromised and what can be tested in situ.
If all of the manual and parts books were available to owners, I could do this myself; I can guarantee that my motivation to get the task done and dusted is not lacking!