GMGM Drivetrain Part numbers what does it fit NOS
 

Hey people - I need HELP! , I got some differential yokes and some 4x4 parts, but dont know what they fit. All new old stock... I'm having trouble matching up the part numbers. One yoke is for a 12 bolt 1964 - 72 cars - up to 1987 trucks... some Good NEW Classic GM parts - good Condition - still in factory GM boxes (I luv auctions!). Anyone know where I can look these numbers up? I'd appreciate any help!
I need some cash to get a rearend for this 4x4 i just bought =) :D

Ok - heres the numbers... y'all need anything: 3878972, 3996118, 6259082, 6259080, 3988524, 376853, 3903706, 2352157, 15521884, 376836 Oh while i'm at it, what year chevy truck does this Dorman armrest fit?: 705-250? Offers??? I hope someone knows something. All I know is they dont make any of this anymore! ( o china maybe! )