73 dodge dart TTI headers

Thanks guys, I read that whole post, and it freaked me out about my TTI's. He had(s) a 68 cuda, that's why I was asking specifically about my 73 Dart. I'm probably going to use the gasket that comes with the TTI's unless some of you state differently! and the bolts are going to be 12 point ARP's don't really see reason for the expensive Percy's Split Lock Friction Header Bolts. http://www.summitracing.com/parts/PHP-21004/
The tech support team at TTI said that you only need to grind or slightly bend the Z-bar, and that no extra parts are needed.

Thanks