I have a new set of JE customs that were made for a MR head. They are a for a 4.25 bore and have a 0.160 dome.
The build was never completed and they have been on the shelf.. They do need rings and pins. They do have the spirolox.
If you're interested send me a pm $400 plus shipping. These were $1000 new and still in the box. they need a new home.
garyv