is there such a thing as a 8 1/4?

2.45 was the highest gear that Mopar put in those rear ends. It is SO high that it requires it's own carrier. If you want to change to a numericly higher gear, you need to get a different carrier.

I have 2.45s in my Dart right now, and it's not the worst accelerating car I have ever owned..LOL and it's great on the highway. Even with those gears, it'll get up and pass people without downshifting, and it'll still spin the rubber real easy....

I can't wait to get my new 3.55s installed!!