Need some measurements

Hey guys,

Im looking at a couple of a-body 23 spline a833's...I noticed the ones im looking at have some welds at the front bearing support (two transmissions from different guys) which i find kinda strange...is this factory? you can see what i mean in the attached picture

also, can someone measure for me how much shaft there should be after the splines? it seems like theres a bit much on this one.

any advice appreciated! thanks!