Ls2 cruiser

I am after some help from a sponsor or anyone else who can help. I am chasing an output shaft from a th400 4wd box and I am after one that measures 5 3/4" from the inside of the gear to the end of the spline (32). I believe from searching the internet that there might be one that measures 6 3/8" and we can cut it for our adaption. This shaft -6 3/8" was used for a th400 to NP208 transfer case(this info is from the internet). Thanks in advance
Russell

Ls2 cruiser

Here is a scetch of what I want to end up with. Thats 5 3/4" and 2".

Ls2 cruiser

I found a shaft. Mods please close