Cutting A833 Input Shaft Question

It seems our friend from New Zealand has an A833 shaft that appears to have never been previously cut. But is 1” or better shorter than a factory Mopar.

I believe what he’s trying to figure out is what application his transmission could have come from using an input shaft that short instead of the usual 2” plus in front of the splines on factory Chrysler products.

Did any other manufacturers use Chrysler manual transmissions with a shorter factory input shaft?