The vz. 58 is not an AK. There's zero parts compatability between an AK and a vz. 58. Not mags. Not furniture. Not internal parts like bolt carriers or barrels or controls.
While the vz. 58 is nice, it is not an AK.
If you're seriously interested in a vz. 58, your probable best bet is to buy one already in Mass. Because the vz. 58 isn't an AK, the vz. 58 lacks the huge aftermarket of the AK.
Personally, I see the vz. 58 as a milsurp collector's gun. It won't be as easy to use in say rifle competitions like 3-gun as an AR or AK.