The "shallow" covers fit the 14x6 rims, the "deep" covers fit the 14x7 rims and won't fit the the shallower rims at all. Additionally, the 71-up covers centers are painted silver vs dark argent for a 70. The hole for the valve stem changes shape in 71 to more rounded ends on the slot but some people feel that this was a late 70 running change. If I can find some shallow ones n my stuff, I'll post some dimentions for you....