With a MSP lip... nothing. Line that bad boy up and attach it. Everything lines up perfectly. You can either pull/push it while attaching to make it more even or make it stick out more towards the sides.
lol he doesnt have an msp lip though.. i wanted to know what kind of cutting he had to do to get that subaru lip to fit the mp3/msp/p5 bumper. I guess it would be the same as the how to Lewis made on mounting the JDP replica lip