Hi Nigel, I cleaned the earth yesterday. I think the rear subframe going live may have been related to one of the leads that had split slightly, I replaced it and the subrame no longer shocks.

The coils currently, I have the ones that go crazy at high revs and the 2 from the spare lot that work, which work ok till they get hot then 1&3 stop firing.

They'll do for now, new coils cost more than I can fork out currently. It only needs to last a few more months till I gut it for parts.