Yes, yes... I understand that the Nissan Skyline line of vehicles is no big deal elsewhere in the world. But they are the forbidden fruit of the Japanese car scene here in the [former] United States of America. Because of this, we've had to improvise.
So how does one accomplish such a conversion? Simple. Inherit your grandmother's 1992 Infiniti M30, order an R31 replica spoiler on eBay, drop in an RB25DET and call it a day!