EIMCO dozer. Parts needed, idler

I have a 1966 103 (44,000lb dozer) with a very large hole.... a jagged hole where a bearing used to be a long time ago.

Looking for that NOS on the shelf somewhere or the old guy who knows what other one will fit or.......... the place to send mine for rebuilding.

Thank you

(two years ago I was fixing lawnmowers and now I have 110,000lbs in the yard)

EIMCO dozer. Parts needed, idler