Any of the STI or knock off STI lip kits will likely work for what you need. Most of the lip kits mount pretty tight to the factory front end. Really it is how far something like a real splitter sticks out that causes it to scrap.
spcmafia's car can be seen with a lip kit here.
https://www.ft86club.com/forums/showthread.php?t=144409
If you look at the pics for the sti lip you can see how thin it actually is at the bottom as it essentially hugs the stock front end.
https://www.subispeed.com/part/stie2...E#.YG9FxuhKiUk