D82u pony Part questions

Good evening everyone,

I recently had my rear main seize on my d8-2u pony motor. I’m having a heck of a time finding any replacements the book shows 3f-561 for the rear and 3f-562 for the front. They have been discontinued by cat and I’m struggling on next steps. I also discovered while I was in there that my rod bearings were on their way out. I was able to find those from cat luckily. Does anyone have a source I’m really trying hard to not go direct start. Thanks everyone

I have some good used main bearing for the pony motor but can't find part number on and should have too the rod bearing

look on Machinery Trader and search for 3F0561 and 3F0562. There are not many but there are a few. And is you crank Std size and condition good enough to not need grinding?

HI I have a set on crankshaft but these are ,030 and have with 3f???? and have some other on with no number on.

I found with one of my D2s that there were plenty of std bearing shells available so I had my crank welded up so that I wouldn't have more of a challenge getting bearings

Hello were abouts you located at I have complete pony engines and parts in central Illinois?

Thank you everyone for your help. Gemdozer i may reach out i was able to get a new old stock 3f-0561 on eBay looks great and now im going to gamble and pull off 3f-0562 see what it looks like.