No worries, happy to answer. I got some guidance from @72bluNblu on front tire size, they fit like gloves lol. No rubbing at all. I do have a touch of rubbing in the rear on the fenders with the 18x9" standard-offset Mustang wheels and 275/40ZR-18 Continentals even after folding over the inner fender lips (read: smacking with a 2-lb sledge lol). Note I swapped a 1967 B-body 8 3/4" into my car as well. Tires are pretty close (<1/2") to the rear leaves as well so that's about the max width that will fit in the rear on a Duster/Demon/Dart Sport.