2008 mustang performance, K&N?
the one you mentioned that's the mass air system you want. to get a little more horse power out of it without spending allot of money get some split fire plugs, 6 to 8 more horse power they accompany the k &n your going to get, and they a aluminum pully set you can buy, for around 85 dollars that will give you10 to 12 more horse power, add all this to the 20 horse power you'lll get with intake kit, your looking at alot of performance.there's a company called mustang unlimited.com go there ask for there free catalog it is the ultimate wish book every thing you need to customize your car. everything! cheaper than dealership, and performance shops. if this is your first mustang, welcome to the club, mustang owners take care of each other your family now.