look again
It is almost impossible to even find solid core wires for any car anymore. If the wires have been replaced in the last 10 years or so they are probably already suppression wires, and they work just fine. Your radio will thank you.
With my fire-truck having 24 spark plug wires, (one of them 6'8" long) it was simply too expensive to buy new wires, so I made them myself. With the few extra feet of solid core wire laying around off the roll, I made new wires for the Opel too, using 90 degree motorcycle spark plug ends with built in resistors. Kinda the best of both worlds? Magnetic suppression with the solid core wire? Who knows? They work great, and the hard plastic, waterproof motorcycle ends sure do look cool, or at least I think so. That old-style Packard 440 wire usually lasts 30 or 40 years too, so I don't plan on replacing them anytine soon.