Dude, you LOWERED the car, your tires now hit. This is one of the lessons in modifying a car, one modification NEVER stops there.
Narrower tires may be needed, less offset rim may be needed. You may even be able to solve the problem with a wheel alignment adding more neg camber bringing in the tops of the wheels.
I have a simlar car, a 65 Buick Gran Sport (both cars are "A" bodies and share MANY components) and I have 205 15 tires on 72 Buick 7" wide "Roadwheels". The car is slightly lowered and the tires hit just a little bit. I changed the inner fender bolts from the regular bolt to a "button head" allen which has a rounded top. The tires barely hit them and when they do it just "rubs" them.