Ok, my grandma has this truck that she uses to pull her trailer out to the lake every year. It's tradition. Her and my grandpa used to go there every year and now that he's gone she still goes to keep it up for the grandkids. Anyways, I think the old buggar's rearend (probably a 10b) finally blew up and she can't afford a new one. I believe her truck is a 79 (its got the one big head light) 1/2 ton. So, I was just wondering, will my 12 bolt from my 81 1/2 fit right in because I'll sell it to her way cheaper than she'll be able to get hers rebuilt. ( I think its a 12 bolt because it has "GM12" stamped into it.) Anyways, all I need to know is if I sell it to her, could I swap everything over without too much hassle? /forums/images/graemlins/1zhelp.gif I just want her to be happy.