I'm brand new to this forum so please take it easy on me. I just purchased a 1970 LS6 and want to put 17" wheels on her. I like the look of the original wheels but just want them a little wider. Year one has the replica cast aluminum 17" wheels for about $219 each. Product number is CMW179BLK and CMW178BLK. Does anybody have an opinion on these wheels and does anybody have any recommendations on the backspacing. The two options are 5.125 and 4.5. Thanks.