I am thinking no , but am not the final word on these things.
This is the size I have under my '65 dart with mini tubs and springs under the rails.
15 X 10 with 6.5 back space.............there is about 1/2 " to the spring and 1" to the wheel well lip.
Unless the B body wheel wells are significantly larger and you figure the right offset , I'd say no chance.

Oooops , forgot to add 2 1/2 " off each side on the housing too.