39 V8 trans in a Model A

[Juergen]

A friend wants to put a Model B engine with a 39 Ford trans in a Model A. He wants to know if he also has to modify the driveshaft. I searched this forum and was not quite sure if a Cling adapter and 39 trans was a drop in fit (that is no driveshaft changes). Also i read of some comments requring Model B clamshells.

So, does the existing driveshaft fit? And does he need model B clamshells or will Model A or V8 clamshells work?