I have never seen them for the V8 cars, but I have heard a lot of good things about them from the 4 banger crowd. Thats not sayin much though. I will be buying them now that I know they are available. They deffinetly produce more spark........Check out a display at a local shop. Pretty imppressive.
The FAQ's have a good explanation of a lot of the marketing terms and buzzwords that get thrown around when it comes to spark plug wires..
I ended up getting the kv85 magnecors JUST because they dont make the ridiculous "100,000 times more powerful spark" claims in order to sell you something..