Welcome to the site
First upgrade depends on what you are looking for? Performance or looks?
Performance wise, exhaust, cai, are usually the cheapest mods or if you have some cash to lay down look into getting a T-Lok and Higher Gears.
I do not know where the video is but I was at the meet in Steele, Alabama
where he last ran it and he is a member here. You can pm him for the video if he does have one. Justin00Stang is his username here.