Pitman Arm on B-Body

I have a 70 Charger with 26.5" tall x 10" wide front tires. Looking to put a fast ratio pitman arm on the car. Anyone know if I will be getting a lot of rubbing with this size tire?

I'm running a "fast" ratio arm on my Firm Feel III steering box, with Goodyear P255/60/15's on a 15X7 Ralley with 4.5 rear spacing the tires just barely "touch" the frame on a full lock to lock turn....be sure to check brake line/bracket clearance depending on wether your front line are over or under the frame rail?

Mike

Just searched the topic instead of starting a new one. Classic Industries says they have them, but when I check the part number on google it pulls up for an a body. I'm just making sure that they are different (like I think), but just checking.
http://www.classicindustries.com/mopar/parts/k7074a.html