Phillip Nance
I pondered this one a while ago as I had an old DJH whitemetal kit of the 1366 class I wanted to run as EM. The closest I could get to the correct drivers was the SECR P class which is the right diameter (scale 3′ 8″) but the throw is only 8″ instead of 10″. A small difference in 4mm unless you really want it exact. I would hope that with saddle and pannier versions on the market Alan Gibson or Ultrascale would consider filling the gap with conversion packs……..