Bigduff1

Does anyone know anything abut the KMC701 rims. I am asking these questions because i want to make sure that the sales people are giving me the right adice and not just trying to make a sale. They are saying i can put a 20x10 rear on my car. with probably a 1/4" or 1/2" spacer. is this correct

Can anyone help me. what is the biggest offset i can go with on a 71 monte, or what i am asking is would a 65mm offset/rear and 46mm offset/front fit