Bearings can be hard to find these days so you should feel lucky that you have a couple of sets to pick from.
I've noticed the same thing, any idea why?
The same old story, global supply chain issues..... The middle east is in turmoil and King bearings is in Jerusalem from what I understand.
I was in contact with king on there +/- ,001 race main bearing sets and they tell me the production date is scheduled for 8/24.
AG/
1970 Challenger w/572 Hemi street car and my pride and joy.
1986 T-Type with 272 Stage 2 Buick V6 engine - True 8 second street car. Just updated the engine and put down 928 HP @ 35# boost to the ground on chasis dyno.
1976 Cee Bee Avenger Jet Boat - 460 Ford powered.
