I loved the power steering and bias ply tires on my stock 65 'S'. Couldn't have it on my 340 transplant for some reason, probably the headers....bias tires were a little lacking on the highway but light to light they were smooooth.
Bias ply tires will get you KILLED with how they follow the rain grooves on the interstate. They'll dang near snatch the wheel outta your hand if you're not holdin on good.