Jesus

Want to Buy differential Ring and Pinion set 3.70 to 3.90 ratio for off a Buick 1956? 1957 to 1959 1960?, I am attaching a picture of old part chances are if you have the part it you know Buick part's better than I, buying for Cousin in Cuba 1959 Buick 4 door now has diesel engine like most Old cars in Cuba thats why they say need non factory ratio specs they say its believe to be of a approx 1957 Buick 3.90 ratio or 3.70 may work also he's looking to replace ring and pinion now has part# 1169269 43 tooth ring 11 pinion wtb part that maybe interchangeable. see attached pic ty.