12 bolt car vs. truck

[mwilliams5891]

Ok it's been a really long time since I've been on here....but it's good to be back!!! Anyway I am back working in my C10 and I was getting the parts lined up for the rearend and was reading about the difference in car vs. truck and I don't know what I have....it was given to me not with a rig so I'm worried and I don't quiet understand what is different....is the housing? Or the internals? Or all of it? I was going to replace everything but the housing pretty much....new 5 lug axels and an rayon posi unit with new gears....but I'm scared of buying missmatched parts...I have tried to search on here and the Internet with bono luck so hopefully I didn't miss a lot...but anyway thank for your help!!! You guys are the best if the best
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