I had an old pimp mobile that I found these tires for. I did a quick search for tire sizes for a 68 Bettle. Here's the results for Radial (Large) Whitewall tires. Best of both worlds, radials w/ the look.
Why do you think I only opted for the 1/4 mile action. At Road Atlanta, the passenger side of my car would be torn apart. I'm only good from 0-90. After that, I'm a slow creeper. Just the opposite from you. You're probably not all that great from 0-80, but after that, you're just getting warmed up.