I have had to revise the front cover design to allow for the ignition variants, as one of the programmable ignitions needs two triggers to work sequentially, which will be useful for twin spark plug heads in the big bore engine. I will have to post work the covers to suit, but all the sealing surfaces will be in place, as well as the reference holes for mounting the sensors.

Latest variation has been sent off to the 3D modeller, awaiting revised drawings. :-)