Yeah think I asked that last time when I got new leads and plugs, he said there are two types, based on year, I know my TVR is an 88, so I'm guessing the newest Sd1 would be the right fit, thinkin about it.
Ah nice one, the misfiring has sorted it'self now, I had a hunch it could have Ben the wet weather, However I'm gonna change dizzy and rotor arm anyway. For what they cost,