sry for asking again guys, i've read some posts but they all seem scattered. I'm a huge fan of the sti wing..i just can't afford the sti...i've heard about this 4 bolts? or holes for the wrx, and 17 for the sti?? can someone elaborate on this? how hard would it be? can i just bring it to a shop and be like put it on?? how come it needs like 13 extra holes!!?! any input is great guys!