found a 14b out of a 78 3/4 ton van.(atleast thet is what i'm told) will that fit ok under my 78 blazer? how can i tell if it is limited slip or not? what should i look out for; both good and bad; when purchasing this or another 14 bolt? what u-joint do i need once i make this swap? driveshaft length? any help would be much appreciated!!! it feels good to post again...my compooter has been pootin' for the past two weeks!!!!!!!!