Picked up a a100 that I'm setting up for my street-strip play toy. With the bb and auto trans standard tail housing it's looking like I'm gonna be around 20" is this gonna work with a ladder bar rear??? Thanks for any input!

It depends on the height of the tranny yoke and the third member yoke, correct
I have a friend who has the short wheelbase version of the 1965 or 1966, (CRS ) A100 pickup. He is planning on making it a Pro Street type build with a 360 and automatic, it was a six cylinder and three on the tree
There is a pick up truck like his that bracket races at Woodburn with a 440 in it so it has been done, good luck on yours
Like most thing in building cars for racing that weren't factory options good planning to start with is the key to success without to many heartburns Measure three times, cut once

If the std tail shaft is too long, there is a short tail shaft for 727's that was used on 4wd trucks that had divorced transfer cases.

It will work fine as long as all of your angles are good. Check angles with full swing of rear suspension and try and keep changes hovering around the zero mark.

Its no problem.. when you set up the engine and
trans point them right at the rear end.. once
its all set then you roll the diff down to give
you your angle.. both of my cars are short