Like you said it may be something else. I have 25.5" diameter tires on the stock 14x7 wheels and they don't rub.
I'm about to install Global West offset control arm shafts [Guldstrand offset] and hope it's worth the effort. Was there a noticeable difference?
The offset shafts are not the same as the actual Guldstrand mod. The offset shafts do help with number of shims needed but don't do anything about the negative camber. There are only three options for correcting the suspension geometry. Taller spindle, taller ball joint or lower the A-arm mounting points(Guldstrand mod). I would highly suggest looking into the taller ball joints if you going with aftermarket arms. The aftermarket arm will not change the bad camber curve but may give you more caster. Meaning bringing the top of the tire back. http://www.pozziracing.com/first_gen_suspension_geome.htm#Geometry discussion
I never drove my car enough before starting the restoration to really know how much
