14" x 7" with 3" back Spacing, Will it fit?

Hey, I'm looking at picking up a set of SBP 14" x 7" steel wheels with P215/60R14 mounted. Supposedly the wheels have a 3" back spacing and 4" front spacing.

1.How will the back spacing fit on my 69 Dart?
2.Will I need any modifications?
3. Any issues with the front fenderwells?

Thanks!