Magnum engine misshapes..,

Yeah, not a good streak to be on..... I agree, already having the intake off before will be a huge blessing. Hopefully your luck changes quickly, because though not unheard of, it's still uncommon for these to kick head gaskets. I've had them with a lot higher mileage, and my truck is at 307,*** currently. I'm confident you'll have both trucks on the road soon.
Really hoping to have the white truck back and running very soon within the next couple days. But of course that's just a fair weather truck... Fortunately we have other vehicles but I need to get the green truck well sorted out before snowmobile season that's for sure...
With 150k I was certainly not expecting any major problems as well...