There were only 9,844 Mustang SVO's built between 1984-1986 so it's highly unlikely that you would own one and not be aware of it. The turbocharged-intercooled SVO's had very distinctive body parts including a functional hood scoop and a large rear spoiler, not to mention 175 HP (200 HP in 1986) a 3.73 rear and most of the V-8 Mustang mechanical equipment.
The turbocharger is pretty obvious under the hood, even for the inexperienced owner.
It's on the drivers side, it's huge and has a satin finish. Can't miss it.
[This message has been edited by Mr 5 0 (edited 06-22-2000).]