Here is the part number for the oil inlet on most DSM T25s, Aeroquip FCM 2930, -4an to 42 7/16 inverted flare. Just posting for people that need it. I needed it and couldn't find the right part anywhere. I had my friend go through a bunch of fittings at his work till he finally found the right one.

 

Well, as long as we're trying to help people out, maybe I can try and give you the info for the inlet of the DSM 14b.
It requires a 12x1.25 or 12x1.5 banjo fitting. It was a pain in the *** for me to find that out. I'll get some part #'s tonight and post them.

 

i used a t3/t4 oil inlet and that worked as a 14b oil return. lol ... i was surprised.