Well spotted Jack, thus this makes the machine an early 1975 unit and not a 1974 unit as initially stated. This would one of the last Model 45's fitted with a Kirby power plant as shortly after they went to using Briggs engines across the whole range until the end of model 45 production under the Rover brand.
Cheers, BB.
I live a 24 Hour lifestyle, but every now and again I seem to fall asleep, well at least that's what my wife tells me.
