wheel size for 1965 Barracuda

I have a 1965 Barracuda with 13" wheels with 3.5" backspace. I want to put on Cragar SS Chrome wheels. The ones I'm looking at are 14"x 6" sbp with 3.5 backspace and 15"x7" sbp with 4.125 backspace. I'm sure the 14" will work but not sure about the 15". Will there be a clearance issue front or rear with the 15" Thanks in advance for all your info.
Bill
Forgot I asked this before. Sorry.