4 and 6 drop what offset on a 17" tt2

[kevin from oc]

I have a 68 swb with an early classic 4 and 6 inch drop. I am looking real hard at the torque thrust 2's. My question is what offset do i need for the front 17x8, and the rear 17x9.5, also what tire size fits without rubbing and still gives a soft ride? Does anyone have this set up and maybe a photo? I am trying to buy some new wheels and am having a hard time pinning it down..Thanks