Kickdown linkage

Hey guys does anyone have a 318 with a edelbrock carb on it that they could show me their throttle linkage? Im not sure how to adjust mine correctly. I watched Uncle Tonys video but it doesn't ever show how it should be set up. I have the 4 barrel and I think its a 600 cfm.

Im also wondering if anyone knows of a set of Summit headers that work really well with a 72 duster 318? I want to set up a duel exhaust system, and Ive looked at TTI stuff but is there anything else?