abother newb question - replacing front drum on 63 c10

[neverwinter]

firstly - always check your wheel lug nuts. in my hasteto drive my new truck i didnt and i almost was killed at 60 mph. truck started shaking like mad. luckily i got off the hiway and a mile from my house. then my luck sort of ran out as my front drivers wheel decided it didnt want to stay with its 3 siblings and went its own way across the road. i was shaken up and i need to order a new old drivers fender as mine got thrashed. plus the cost of a new drum and hardware. in the grand scheme of things i am lucky i nor anyone else wasnt hurt so the couple hundred dollars is small change. but it could have prob been avoided if i had taken 3o minutes and my air wrench to inspect all the major bolts.

so now i got a new drum from autozone and got the old one off. my new problem: the old one appears to either be cast? o welded to it a pice that holds the bearing assembly. the new hub is merely just the drum with a large hole in the middle where the bearing would go. do i need to somehow retrofit the old drum inner bearing piece on the new drum or did i just get the wrong drum? id have no idea how to remove the old piece and retrofit it?

the old drum has a small flat spot about 1 inch long where it impacted the road. it spins fine and i can prob replace the 1 sheared lugnut or even all of them. do you suggest this or do i just need to make sure i get the correct part? the new drum seems to be the right diameter and it is 6 bolt pattern but no way to install the bearing and bearing assembly?

ok i see what i am talking about now: http://www.lmctruck.com/icatalog/cbe/full.aspx?Page=92
in the top right it is this piece i need to transfer to the new drum. guessing ill need to heat it and press it out? maybe just easier to get the sheered lug stud out and replace it?