The Fumoto valve T-203 fits my Cummins ISM 450 in a 2001 U320. The Fumoto valve seems harder to thread in than the drain plug, but it doesn't continue to tighten until it seats, works fine. No more overtightening risk in my oil pan.
I bought one for my C8.3 and will get another one for my 2013 F150 that put the drain on the side of the oil pan; making a mess every time I change oil.
I used the Femco Compact and am very happy with it.
I installed the Fumoto valve several years ago on our ISM. Had one on a prior gas Moho. Best thing going for oil changes.