489 3rd memer gears

Well that would be cool if so. I know posi and open are different not sure on the different style of sure grip

used , a few open centers here available. Matter of fact, can anyone tell me if the spiders are different from one center to another '41'42'89? If no diff, I got a set I can send you if someone can tell me how to get the cross shaft out...huge screwdriver?