will 3 1/2" offsets fit? Alum slots on 74 Duster?

Keystone Klassics on my '74. 185/75/14's up front and 28x10-14's out back.



I've got tons of room with them in the back. Up front... my suspension rides too low (even maxed out on adjustment) and my front tires will rub the fenders when I'm turning (my oil pan and k-frame also have massive dents in them from hitting high spots in the road)

My big complaint, I can't seem to find any decent wide 14" tires. I've got a few more sets of Keystones (wider ones), and I was going to go with a tire that had at least a 14" Wide Tread on the back, when I finish installing the supercharger. But nothing like that exists anymore, 14's are getting hard to find.

Even 15's are getting hard to find a wide tire in too, cause I have some 15" Keystones, but can't seem to find any tires with at least a 14" wide tread in a 27 - 29" tall street tire.