7 1/4 rear work with 318?

I still have the original 7 1/4 under my 72 4 dr. dart. Its held up to a lot of abuse, lately its been making a winding noise though. LOL. I am planning on swapping in a 8 3/4 w/ a 2.94 suregrip & sm. bolt axles this winter. I use the car daily so I don't need a low gear.