Went to see the frame today. has a dana 60 rearend that looks like it will swap into my 59. thinking whole rear. springs and all. dont know what the rear gear is but google says anywhere from 340 to717. trans looks different than mine top cover is the same but lower case is different. google says the gmc were able to attach a pto. any gmc guys want to help? frame has a 305? v6 in it looks complete but what to do with it. ? still thinking on this.