yo, i hear Skyline GTRs can hit high 12s and mid 11s with jus a few modifications. IS it true? For Example, u put in better air intakes, add headers (man, i dunno wut im sayin), but jus a few stuff could make the Skyline hit mid 12s or high 11s. For those pplz wit Skylines, how many HP does it take to make a GTR hit those 1/4 times?