What spark plugs to run [nitrous setup]? how do change timing?

NYSpeed Automotive
5

i beleive you need a timing adjustment kit, such as this:

http://www.mustangtuning.com/st4tiad9gt.html

you may be able to shop around for a less expensive setup, but that price doesnt seam to bad considering the work it takes for them to make it (and others are closer to the $200 price range)