Gents, thinking the old cardboard gearbox cover may have to go!! Bloomin' BL rubbish, only lasted 43 years .....!   I am thinking either a 'plastic' or 'fibreglass' one from one of the usual suppliers, which I will insulate before fixing. There does, however, seem to be some (considerable %) price differences though between the suppliers, for all the covers and fitting kits/seals??   The Racestorations one looks nice, but for more than double the price of the other offerings, I can emul