Hello, I am new to the forum. I am helping my friend with replacing the axle on his 1998 Tracker. The axle bearing burned up and in the process the axle was damaged beyond repair. The axle shaft seal (GM part number 96058773) was also damaged and needs replacement (see below). Where can I find this part? The brakes also need replacement and when I ordered the brake parts, they sent me the drums pictured below. My question is was the rearend on his Tracker replaced with an older model at some time or did they just send me the wrong drums? Your help would be greatly appreciated!

Thank you,
Gary
Hot Springs, SD