There's no "look-alike" radials out there that I know of. YES, reproduction PolyGlas are expensive and YES they ride just as good as they did in the 70's
I put them on all my cars...
If you want radials, there's endless choices out there. F70 X 14 = 215/70R/14 in a radial
Most people decide to go bigger, if originality is not a concern.