Jeff thanks for verifying the snorkle. Regarding the tab go to eBay and type in 68 mustang snorkle. Three will pop up. Look for 302 4V snorkle under Mag Mustang and Andy showed quite a few shots of the snorkle. Even has the stamped number on it. You will see what I meant by tab. Thanks for answering my specific question. Looks like NPD has some 390 decals so may have to go that route.