“ Upgraded with Rolls Royce engines at some point.”
Not an upgrade. RR makes fancy, beautiful cars however, their turbine engines are no better than GE or even Pratt.
If you think RR and Pratt Whitney engines are the same they ain’t. Stand at the check out counter and see the price difference. Mr. GG2 worked the line at Boeing in Seattle for years. RR engines are a major upgrade.