...by the way, both of those guys referenced above are new to the forum and seem to me to have better than average technical knowledge... checking their profiles, one of them doesn't even indicate ownership of a 370Z and for both - most/all of their posts are limited to 1 topic... supporting statements for 'the other' SC kit... just making an observation- I think their questions are valid regardless of whether they are simply Z owners or whatever, but I am curious as to their interests in the topic