I am wanting to upgrade from a stock turbo, to an S366 in my 2004 Powerstroke. I am currently running stock sticks (I understand i'll need bigger). My question is, is it just a drop in turbo, or does it require the T4 kit? I don't want to spend the $1,600 if it is not necessary. Also, are reasonable size injectors? I want my truck to still be a street truck with some power. Thanks in advance!