I bought a set of them and they are absolutely awesome. I always loved the original Cragar but these look better (to me anyway) and don't have any steel on them to rust. The picture shown is a polished aluminum but the actual wheel has deep chrome. This is the wheel that I ordered, 610C571242 and it had 4.250" backspacing. I researched and almost everything I read said that I needed the 4.250" backspacing for my 66. My car isn't ready yet so I can't tell you 100% for sure that the backspacing is correct.
Check this place out.
www.streetsideauto.com. They usually have deals but sometimes they have $100.00 off if you spend $500.00. I split my purchase up into two orders, added some other things and saved a lot of money.