You lucky devil. A Supra for your 16th and a father who helps you work on it! Adding a turbo is a great modification but consider your own situation before you embark. Boost is an addiction. Once you're hooked it takes more and more of it to give you that adrenalin 'high' each time. As you turn up the boost, you begin to approach and surpass the limits of the stock fuel and ignition systems. A slight blip in the fuel delivery or timing while under boost can result in a catastrophic engine failure to the tune of a couple thousand dollars. Do you have the willpower to keep boost at conservative levels or do you have the wherewithall to accept the associated risks? Will this be your only car or only means of transportation to and from school, college, work, etc or can you get along with occasional periods of downtime associated with boost-related repairs? What about smog legality in your state? As long as you can deal with these issues, then go for it. You'll learn alot from the experience and have fun doing it. But if any of these issues are going to be a problem, perhaps getting in the way of school (which is first priority), then you should probably stick with what we sometimes call basic performance upgrades: intake, header, & exhaust which should be good for a combined 12-15hp increase without sacrificing Toyota reliability. Aaron is a trusted member who can assemble a kit for you or just get the plumbing from him and scrounge your local junkyards for 3rd gen turbo supra parts. Get and read cover to cover a copy of 'Maximum Boost' by Corky Bell which describes the theory behind add-on turbocharging. Make sure your tires and brakes are in tip-top shape because its not good to go fast if you can't stop fast. What a lucky teenager! I wish I'd had a Supra when I was 16 but they were too brand new then. Good luck.
Phil D.