ok so first i told u to search for gordata's thread about spark plugs and you would've found what you needed and now you've made 2 threads asking for the same info. stop with unnecessary threads dude.
gordata's thread:
Spark Plug Info
spark plugs 1 step colder NGK:
Sparkplugs.com - Cross Reference Search Results
i think 4an is standard so just go for it. worst case scenario, you return it if it doesnt fit
as for widebands:
innovate makes good products. check local stores for any specials or sales before you order online.