CM2250 Swap with CM870/871

[Unilevers]

just for reference i cut a ISX to 309 thou (literally the entire area from the counterbore ledge to the oring narrow) and had custom stainless shims made and it has been running fine at 500/1850 for 6 months now. It had a crack in the counterbore ledge and we just kept cutting until it was gone and thats how deep it was.

Cummins says it wont work but it is just fine.