I had to bend the front bottom corner of the fender lip for more room.
But on a car that doesn't have a lower valence (67-69 Dart, 73-up Dart) The front fender dog leg is stabilized by a rod. You can move the hole on the bottom of the fender foward; drilling new hole. That results in the bottom fender edge being pushed out, getting you more clearance.
Try this in advance with the slot adjustments, than clamp the stabilizer rod to the bottom fender edge where you want to drill the new hole. See if that looks OK to you. It will flare out the fender dog leg. Look at it standing up like you were walking by the car. Might leave the car for 1/2 day then come back and get a fresh look at it. Most people don't ever notice.
This is on my 68 Dart. I fit 245/60/15 tires with 15x6.5 factory ralley rims.
