Question on 2 inch drop spindles

The spindles and big brake kits do move the wheels out father on the 72 and older cars. From the very beginning I knew I would be ordering custom wheels though. That being said, I'm still worried about what I'll be able to fit under the front of my 68. With a dropped spindle, the outer tie rod will hit the rim lip or sidewall of the tire if the backspacing it too great. With a stock spindle the tie rod can ride "inside" the wheel. I haven't measured for wheels yet but just a quick measurement from the rotor face to the tie rod gives me just over 5". I'm hoping with a low profile tire(that doesn't stick out past the wheel lip) I'll be able to run a wheel with 5" backspacing. Who knows how much room I have to the fenders at this point. I might only be able to fit a 7" wide wheel on the front.