Rims for 69 Valiant 100 Options?

Hi, I'm new, I bought a 69 Valiant 100 with 13" original rims. What are my options for changing them.

I found a set of Cragar SS rims they are 14" x6" and 14" x8" with 3" offset. I don't know how to tell if these 14" rims will fit the car and not rub inside and top?

Does anyone know what the offset of the stock 13" are? I know they are 13"x4.5"

Thanks,