I removed my "old rear" from my 49 over the weekend and I tried to check the gear ratio. I'm afraid I might not be able to help. I think mine has 4.11's too. It was originally a v8 overdrive car so I guess that makes sense. I have a 50 sedan parts car that might have higher gears in it, but it will be another week or so before I go to see it. But I'll check it out for you when I do. I am a member of Shoeboxford.com. There is a great group of guys there on the forum and I am sure someone there would have what you need. I could ask for you if you would like me to?