Street Drag Tires

I drive my car about 50 to 100 miles a week on the street. I presently have M/T Streets 28x12.5x15's on the back. I love the look, I want to replace them with the same size tire. I was thinking about M & H Drag Radials 325/50/15's. Anyone have any experience with drag tires for street use? The M/T's are bias-ply, are radials better for the street. Peace