1. I spray off the line with my auto trans ,no need for a window switch with an auto.
2 No you stock plugs will do for a 75 shot. Now you will go to a 100 shot trust me. Then get the Brisk silver racing plug 314vs 1 stage colder.
3 You will need , electrical tape,zip ties. I use an extra arming switch so no mishaps.
ALSO READ THIS:http://www.allfordmustangs.com/foru...dered-zex-nitrous-kit-my-2006-mustang-gt.html