Model B firewall stabilizer?

[37 Coupe]

So at 78 years old and 60 years of Model A and Early V8 I would like one final car soft project a '32 Ford preferably a roadster.I always figured if I ever could get one it would have to be a V8 but several nice ones lately are Model B engines.I have heard the B engine was better than the Model A but also heard they were prone to cracks,wonder why after four years of Model A engine production? My real point or question is this what is the part on a Model B firewall bottom center,someone tried to tell me it was a stabilizer? For the engine mounting? I don't think I have evr seen a Model B hood open or ever thought to ask if there was one at a car show what it was for so I am asking now.Thanks.