I have American Racing Torq-Thrust II on my '65. I tried 17x8 with 4.75"BS and had interference with the upper control arm. I have Global West UCA's, so it could be an interference issue that's particular to the suspension. I wound up with 17x7 up front and 235/45R17 tires (I used the 17x8 4.75BS on the back without any issues).
For what it's worth, I ordered the wheels through a local tire dealer, and had them try the fit before mounting the tire. They were able to exchange the wrong wheels for the right ones with no fuss on my part. Might be worth thinking about.