Source for Odd, high Numerical Ratio 8 3/4 Gears

Hello sages, is there a source for any 8.75 gear sets above 5.13:1?

I am looking to try a ~ 5.88 or a ~6.1
I have a 5.57 now.

It seems that all of those super low gear ratios are made for Dana rears.

I wanted to find a new one instead of hunting swap meets..I just don't know if they are made or available.

Thanks.