Thanks so much for the good info. Is there a way to tell by inspection if a DMF is "going bad" or do the tend to be fine until they explode?
A shame you have to do clutch and flywheel together, since the truck has a relatively new clutch, the ~$300 for the flywheel wouldn't be too bad, but $1k for clutch+flywheel is quite a hit. Maybe I'll be lucky and it's already got a SMF in it.
90 F250 7.3 ZF5 Custom