As an FYI to you bigger bolt owners - like 3/4 and 1 tonners, you can now get those 3.90 pinions from Jim Carters!!! Shop soon and get that discount before dec 15th. I saw the new item while perrusing the catalogue. I was lucky and found a gear set that I could just plug in.
Also, go get yourself the tallest tires you can find. That helps as well.
Once my 72 is did, I am adding a brownie to mine and I'll try to document what it took to do so.
