Looking at a 1987 Toyota Supra Turbo

[lincpimp]

If you do the research (which you won't) you will find the MAF will not handle much more airflow than it does stock.. All the boost in the world will not matter if you run it lean due to imroper fuel/air delivery. Keep the stock turbo for now, and do the other upgrades. SOGI (supra owners group international) is a good place for the DIY fixes and mods. A bigger turbo with more boost will require the fuel system to be upgraded... Plus you can get more boost from the stock turbo with a boost controller.

Don't listen to me though, I have certainly not owned 3 rx7s, 2 3000gt vr4s 1 stealt r/t, 1 lotus espri, and a handful of other turbo cars...