Could someone either tell me or direct me to a place where I could find the Rear Axle Ratios used in the various Buick models in the '48 thru '55 style differentials. What I'm looking for in particular is the availability of a ratio between 3.2 and 3.7 , preferably about 3.54 or so. I know this is a post war question, but I felt there was a lot of knowledge of this among pre war enthusiasts. Thanks, Jim