Stan is right and my mistake- that isn't a Bosch but a Magnaspark distributor. Because of the bigger cap spacing, if you feel ambitious you could try .030" for plug gaps and see if the plugs will fire reliably (the biggest spark possible will give the cleanest burn-I've heard of guys trying it but never heard of the results), or just set them at .028" and be done with it.
If the upper cylinder sheet metal doesn't actually interfere with the manifolds seating properly I would leave them alone. Changing plugs with dual Webers or Dellortos is a pain in the a**, but you do get better at it after a while. The cut down/clearanced plug socket and wobble fitting make it much easier. As Danny said, it doesn't matter who made your car- changing plugs is difficult in all of them. Dual carbs in a Beetle are no different.