Alan, I am so sorry I have not checked this site in Months. - We have not had a 3.23 ratio in a pretty long time here.. we have 1 set of 3.08
2.93 3.08 and 3.23 are on the mid series carrier you are correct.
3.36 you can get in NEW gears which we sell alot of as this is the highest / lowest..lol you can get on the 4 series steep carrier - BUT that means you have to buy a 4 series carrier.

So that is the deal there and I am so sorry we only now got to your question ...which i am sure you mostlikely ironed out by now.
If not give a call 330 990 8155 9am -7pm est

Jim Mitschke
J D Race

Hello I have a 1967 GTO that was born an automatic with factory ac and a limited slip rearend. Somewhere along the line a 4 sp Muncie M20 I believe. The rear end is a 2:93. I am wanting to convert it to a 3:23. I was told that the 3:23 is the highest ratio, or lowest whatever, I can go without having to change everything. I just want to change the ring and pinion. What are your thought on this> Do you have a 3:23 ring and pinion for sale? If so how much to ship to Texas? thanks alan