I just searched Zelda 80 on eBay. 2 kits showed up at the top. Both titled Zelda 80 firestorm. The first is from the seller bamford 993. It is priced $99.95+29.15 shipping. You can see in the pictures that it has closed transfer ports. So it is clearly not the same engine as the second listing. The second is from the seller bicycle-engines. It is priced 219.99. This one is advertised as having the latest greatest features. Bigger ports, open transfer ports, better studs and bolts etc.... This second one is the exact same kit that I got. Mine wasn't called a Zeda anything. Seems like Zeda 80 is just a generic ass name to me. What you guys think?