Wheel and Tire help - 66 4x4 Suburban

[Southcity]

Long time board member with very little 4x4 wheel/tire knowledge, please bare with me. Hoping the 4x4 guru's can provide some guidance/recommendations based on the below:

1.Want to run radial over bias ply
2.Want the tall/skinny offroad look (keep wheel/tire inside fender wells)
3.Vehicle is 66 4x4 Suburban (stock height, no lift)
4.Wheels will be new OE style GM truck steelies. Either 15x6 or 15x7 so I can run dogdish caps.

Want the tallest/skinniest radial 4x4 tire I can safely run and try keep that "close to stock" look. Thanks in advance.