I need help. Don't know much about rears ends so I need input. I have a 65 skylark Gran Sport, automatic. It now has a .273 open rear end. I found a 65 olds 442 parts car with a posi rear end. Drum to Drum. Haven't seen it yet so I want to know what I am looking at. Apparently, it has a sway bar. Would buick have done this? What are the advantages/disadadvantages? Is this the same rear end buick would have used? I know about the BOP thing but what else should I look for. Any codes, stamps etc.? He doesn't know the ratio-is it stamped anywhere? I believe the stock posi rear for an automatic is .308 what ratios should i stay away from? Will people be able to tell it is not a buick rear end? Will it fit properly without modification? Can anyone attach pics to guide me? I heard that there are different spring pads. What am i looking for? Thanks in advance. Steve
