I no longer have any updates. Welding issues on the manifold, work(and/or lack of), a ZJ, other expenses, other projects, my XJ accident and my resulting injury, a death in the family, and manufacturing Jeep door plates got in the way of the MP90 project. The past couple years have not gone as planned.
The manifold is complete but needs machining. At this time I do not have the money nor time to move ahead. I will try to bringing this to completion, but I no longer know when.