The fact that most [jackass stupid kids who are given STI's] don't [make it to graduation] has (see, referencing the singular "fact" from the beginning of the sentence) the potential to make my car really, really fast (referencing the high availability of wrecked STi's to use for drivetrain swaps)
Better?
Sorry, my brain made "make" into "my" when I was typing. Where's the speeling police?