Spring re-location?

I have a 1970 swinger with the offset hanger, rolled outer lip and thats all... I fit a 15 x 8.5 wheel with 5" backspace with a 275 / 60 M/T drag radial. it is only a few hairs from touching the lip AND the super stock spring, but it "fits" and I drive it to the track, pound off a string of 11:00's and drive home.