What size 17 in rim will work on 68 Dart Converitble?

I got the car running with new engine and measure both the front and rear again. Then rear 17x8 with 4.5 backspace is best for my car. I'm going to run a 245 40 17 on the back. The front is where I'm questioning, I used a Percy's wheel right. I can fit a 17x8 wheel with 4.5" backspace on the front and I can run the same tire front a back. My new question will this tire work on the front?