OK, bit more of an update..
PinScore arrived today (thankfully without damage!). Removed old score assembly, old mounting bolts and +100/-100v fuse. Marco's instructions didn't say too, but my understanding is that they are not being used now so no real need to have them in..
I had to modify the back board (lamp board) just slightly. There is a display test switch mounted on the rear of the pcb. I measured everything up but it was being depressed if mounted so I cut a slot for it and all seems good. The displays are awesome. Very clean and its good to be able to adjust the brightness too..
The pic doesn't really do it justice. I have not aligned them with the translight as yet as I'm waiting on a backglass lift channel from MarkC!. I don't want to risk damaging the translite putting it in and out without one.