Yet another opinion ...
Fred, I am running (new) bias ply tires on my truck. I have made a few upgrades (rear axle gearing, engine upgrade to a 261) that now allow me to cruise comfortably at 60-65 with dashes to 70 comfortable, as well. Thanks to Sweet and others, my steering has been adjusted to specs (adjustment to alignment as well as the steering box). I find that the truck steers just fine.
I have *not* replaced my tie rod ends. My truck has less the 65k miles on it, and steers just fine with everything else adjusted properly so I'm kicking *that* can down the road a little further ...
Radials obviously and without debate give you a better ride and steering. But, with all other things being equal (i.e., a few adjustments and tweaks), bias plys can do an adequate job. Depends on your driving habits and how much you plan to drive the truck.
Don't get me wrong here -- If I could keep my stock appearing wheels (and hubcaps) without spending ginormous amounts of cash on wheel mods, I would be running radials today. But I can't afford the mods to make the 17-inch wheels work for my truck, so I am stuck with the bias plys. And I find they work pretty good. Not as great as radials, but not too bad. They remind me to keep it under 70.
I would think/hope you would want to make sure your steering/alignment is all up to spec anyway
. And while we're at it, don't forget to throw some love at your brakes. Have you installed some seatbelts yet? If we're talking driving on modern roads here at modern speeds (or there abouts ...), let's be sure we're safe