Don't forget to say MPH, otherwise you could end up with a LHD/KPH one. if you do, and its a real KPH V8 one, I'll have it!
I know you can dis-assemble to change the dials and so on, but not ideal I imagine.
Unless I'm mistaken, YAC003940LNF which you mention is for the earlier High line MPH cars, and YAC003960LNF for the earlier Low line MPH?
(up to and including #218). Could be wrong, of course!
For anyone interested, this is a list I have for the different late V8 types:
YAC005090LNF - MPH - High line 2004- V8
YAC005110LNF - MPH - Low line 2004- V8
YAC005100LNF - KMH - High line 2004- V8
YAC005120LNF - KMH - Low line 2004- V8
YAC004290LNF - MPH - High line Automatic V8
YAC004310LNF - MPH - Low Line Automatic V8
YAC004300LNF - KMH - High line Automatic V8
YAC004320LNF - KMH - Low Line Automatic V8
This tallies with Nich's posting in Index>INSTRUMENTS>Part Numbers>Instrument Cluster Part Numbers
David