Hi Bagsieblue,
This is the one pre amp version.
As basulike66 was asking I have had a look under the jack plate and there is a neat drilled hole. This is larger than would allow a barrel jack to be reinstalled as is, it would need to be plugged and then re-drilled to a smaller diameter to refit a barrel jack should anyone want to go down that route.
I will try and get a pic up in a moment.
Pete