What centermains to use when installing a non oiler crank in a91 2.4 fat block?

[coffeeguy]

Can I use the existing mains that are on the 91 crank(I think 16756A 1) on the older early 80,s non oiler crank.
I know the od's are different it is the difference in the crank shoulders I don't know about.
I am have a hard time deciphering some old T-Rex posts.
If not what part number or from which motor would I need the bearing from?
Also on the 91 2.5s would the same mains work if converted to a top guided rod ?

[Dave S]

A non oiler should be old. If form a 2.4 has small top bearing. That crank don't have the main Cheeks to center the main. A old 2.0 crank with big top main has the cheeks to center the mains. Just gotta use the old big top bearing when ya do it.

[tlwjkw]

Can I use the existing mains that are on the 91 crank(I think 16756A 1) on the older early 80,s non oiler crank.

only if it has shouldered center mains
....