The nosecone swap is a option, but I don't think the starter motor is the issue, it was the solenoid, maybe if I take the solenoid apart again, measure the components and get a full rebuild kit, that may do it... maybe a winter project.
I was hoping to find a real NipponDenso that would fit, that I could rebuild and have a spare.
Thought 40Flipper might know of a source as I bought the truck from him, and he has had a few of these diesels. I will have to PM or text him.
Did finally find a shop that might be able to rebuild it if I am unable.