It's OK Gerard, I'm back now
I got the harnesses out but unfortunately wasn't able to remove the harness bar.
Removed the seats and harnesses fairly easily but couldn't get access to the harness bar mounting bolts behind the roll-cage.
It looks like the speakers, which are held in place with an unusual looking type of plastic fastener ( not the much smaller, standard plastic rivets I have in my Exige ) , would have to be removed from the plastic trim panel in order to gain sufficient space to get at the harness mounting bolts. That would require removing ( drilling out ?) the fasteners and replacing them afterwards - but there are no spares. As far as I can see the trim panel won't come out without removing the harness bar first!
The guys from the salvage yard told me to be sure I replaced all trim correctly and make sure that no holes were left - so I was stuck!
I tried calling Murray's to get Craig's advice or an alternative approach but he's on holiday for the next couple of weeks.
Anyone else want to give it a go or have any ideas how best to proceed? It's not clear to me that there would be sufficient access even with the speakers removed.
Kevin