I love '68 convertibles, nice ride you got there! I have never heard of 15" wheels being an "upgrade", I always thought it was just a matter of preference. I see 15" SSII 's on Ebay once in awhile, in fact I think there is a full set on there now. I think they have tires on them as well, can't remember for sure. But you're right, 14's are much more common. Chumley
