Front Wheel to Fender Clearance on my 68 Fastback.

I have a 1968 fastback with 15 inch wheels and 225 70 15 bf Goodrich t/a radials and they have tons of clearance up front so maybe yes the disc brake setup the other owner installed makes a difference, it didn't when I switched mine to disc brakes.

Are you running the 73-76 type large bolt pattern disk brakes, small bolt 4 piston, or other?

What is the width and backspace of your 15" rims?