suspension questions

I have a 66 w/289 & auto trans.
the left front tire rubs when i hit a dip in the road or sometimes on right turns. i have recently installed new springs front and rear, new upper ball joints and shocks front and rear. it only does it on the left. never a peep from the right. also when driving at highway speeds the car seems to wander. it was worse before the front end work but is still there. any sugestions are appreciated.
btw, the rims are 15x7 torq thrust II. i dont remember the tire size off hand. the tires do come out under the fenderwell flush with the outside edge.
the obvious answer is narrower wheels or different backspacing perhaps.
but why the rub only on the left? why the wander?

i misspoke when i said i did the work, i paid for the work is more accurate.
the alignment was done at the same time as all of the other work. it holds a straight line, but if you put your hands lightly on the steering wheel you can feel the car acting like it is getting nudged side to side. could it be a worn idler arm?