Or... option 4... go crazy, sell what you have and buy this heavily discounted custom made Mike Lemptert wheel... Same 15” diameter and it comes pre-drilled with Momo and Nardi pattern, plus it has a wonderfully slim vintage stile wood grip. Not as square/ large as the wheel you currently have.. BUT THE STANDARD original style Porsche horn you have won’t work.
https://www.speedsterowners.co...mpert-wheel-for-sale
.. Greg at Vintage can sell you a horn ring and adaptor that will look similar -works just as well to accommodate the momo/nardi stile hole pattern. I will try to find a pic to post.