Tom Rymes
Member
I think that N6Y's were superseded (or at least "replaced by") N7Y. I also think the early 2000TC decals did specify N6Y's, but the later models had the decal specifying N7Y's (certainly the old UK J reg 2000TC we scrapped had N7Y's on the decal)
Maybe someone could confirm/agree/partially agree/totally deny... this?
This is an old thread, so my apologies for re-awakening it, but I ran across it while looking for the proper plugs to put in my early 2000TC, and as it happens, I can confirm that the early TCs did come with a label specifying Champion N-6Y plugs: