By the way, as I'm sure you've noticed, these cars in unmodified form do not take large rubber. This is another reason to keep the power down. Unless you're willing to have your frame modified and reinforced like I'm having done ($8K!), a tire that fits a 15" X 6" is all that will work.

Welcome to the Stude family. See if you can find another when you take your car to a show!