H& H Ignition Solutions [website here] delivered as promised a rebuilt and refurbished distributor. It looked like new. I presume my original internals were used but a new body was sourced which was added to the total refurbishment cost. You can see from the photos what a great looking piece of kit it looks like, just hope it performs as well as it looks.
So the new dizzy was passed to John along with a collection of gaskets and an oil filter for the engine re-assembly and hopefully a good starting point for a fresh tune-up.