I went from 5.38's to 3.54's about 10 years ago. Awesome street gear. I hope you do not run into the surprise that I did. My dana had the large carrier because of the steep gears so I had to find a small carrier to go below 4.30's. But that was not the surprise. The surprise was that it had the monster axles in it. Finding a small carrier for the big axles proved to be VERY hard. I ended up getting one from Bouchillon Performance. If you look in old MOPAR magazines you will probably see a picture of one of their Challengers with about 3 feet of air under the front tires. Anyway, it is great not to be at 3200 RPM at 40 MPH in 4th gear anymore. So the car doesn't launch like a superbike anymore. Who cares, I can go to shows now!