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I would like to replace the 4.09 rear end in my 37 120c with a more highway friendly axle. What modern car axle are 54 inches wide [backing plate to backing plate]. Has any one made this mod?
Bart Morgan

Do you know that new ring and pinion sets in more favorable ratios are manufactured to fit in your original carrier. Manufacturer is Phil Bray.

There are a ton of axles in that width, but when you're all said and done rebuilding another axle to put in there (why put a used rear in without new seal, bearings, etc.) by the time you're done, and all the time it took adapting parking brake cables and bleeding and adjusting things and whatnot, it's just better to buy new gears for your axle. And since you're driving the car now, you already know if there's anything else you need to attend to (whine, noises, leaky seals, etc.)

G'day Bart,
Although a PackardInfo member for some time, it's your first post so,

I'd also like to take this opportunity to invite you to include your '37 120c in the Packard Owner's Registry.