Power brakes??

I saw a 73 Valiant with a 400/B that had both So I figured I could run that. I'd have to build something,,, 451. But I also have a 440 with low mles and was curious about it clearing my setup. Dartsport, How much of the torsion bar crossmember did you cut out for the TH400?

I will find out soon. I will be putting the trans in the car with in the next couple days. I'm waiting for the trans to finish getting built.