Ran the AC Delco Part number on gmpartsdirect, and nothing came up. Do you have a link or different lifters than mine? Part number for individual lifter is HL124 according to the AC Delco website. Is that not the right number for some reason?

Do I need to change springs or anything like that, should I buy them ahead of time?

Okay, I have all the parts I need, I do believe. And some time off from work coming up soon. Do I need to soak my new lifters in engine oil? If so for how long. Chilton manual also says to coat in moly grease. Does mobil 1 grease work okay, and do I need to coat the entire surface area of the part? Any special treatment for pushrods or do they just go in place?