73 dart sport rear wheel and tire what will fit

Obviously the Duster is lowered a little.
I went out and looked at the Sport. The XHD springs I ordered are stock height and NOT plus 1" or 2".
1) Wheel tub is the same as the Duster at 12-1/2" wide inside. My inside lip is rolled and not cut. Either is highly recommended.
2) I have 3" from the top of the tire to the upper edge of the wheel well opening measured vertically. Tires have NEVER rubbed (stiff springs!) My 295/50/15 are mounted on 8" wide rims so the side wall is quite round not flat like it would be on a 10". I would need about 4-1/2" to 5" of compression before the tire would rub.
3) With a straight edge the extreme outside edge of the tire is 1" inside of the fender measured horizontally.
4) I have approximately 1-1/2" from the inside edge of the tire to the leaf spring with 5-1/2" back space.
Hope this helps.
:burnout: