hello from New Zealand, 18 spline head ache a833.

chrisskates2004 said
oh sorry my mistake,

so this fits in the first step in the crank shaft ?

man my mind is blown, i just figured it out LOL

Yup. That bearing goes into the larger diameter cut which is typically used by the snout of a converter for an auto trans.
I use the roller bearing in my 4spd 408 setup. So far, no complaints.