Thanks for the info Overrun, Do you reckon that "the fair bit of work" done on this conversion would include anything more substantial than an Artist's conception?

Ferrydude, I simply don't know how far they went with the conversion. The patent contains detail and 7 drawings with panel layouts and wiring schematics - the drawing I showed earlier is just the overall sketch. I guess Taylor or Smith could tell more - their addresses are in the patent - 5,544,842

The only digital (Semi-FADEC controlled) Tay is the new 611-8C for the G-IVx, all other Tays are all hydromechanically controlled and are essentially derivatives of the RR Spey 511/555 engines.

Is it that the flight-deck of the UPS727s is digital, whereby the engines require analogue (cable & pulley) inputs?