[Shady Rascal]

You'll need to be proficient with servicing old style wheel bearings with grease and then adjusting them properly when you go to reinstall the rotors. All it really takes is a tub of bearing grease and two new cotter pins. Same type of bearings as used on all cars up until modern times when they went to sealed bearings. I'm sure there are countless Youtube videos out there if you need a good visual explanation of the process. Basically you just force grease through the bearings with your hands.

I wouldn't buy Delco parts. For the last few years all of the Delco parts I've bought have just been Chinese parts in a more expensive box. For me, I prefer Bendix or Wagner brands. Their quality has seemed to remain pretty constant as time has gone on whereas other brands have slipped a lot.