Headers question

I have hedmans on mine. They will step them up to 2.125. I would give them a call if you don't want limited to 1.625 or 1.750
I also run the herdman's. They fit well into my 73 duster with a stock front suspension. One tube on each side goes through the inner fender but as long as you don't have a problem cutting the hole, tire clearance is not an issue. I did have to beat the one tube in to clear a 8qt milidon oil pan and the just a little to give more clearance around the oil filter. I ran them for 2 seasons with just paint on them but pulled them over the winter to have the ceramic coated. I'm very happy with them.
What size front tire and wheel are you guys running with these Headman headers? Backspace and width of front wheel if known as well please?