rally wheel size

hey guys aint been on here in forever been out working on the duster! so now i got a question.

back last year i bought a set of rally wheels for my 73 duster they are 14x5.5 and 14x6 and on the back it had g70-14s bias ply tires and they were wide and would rub the leaf spring. well now im looking at tires and i want a set of bf goodwrench radial T/As i wanna run 225/60/r14s on the front and 245/60/r14s on the back would that rub the leaf spring? what kind of stuff would i have to do to make them fit? mini tub? spring relocation? and what width rim would i need for the 245?

thanks
josh