Tbird Turbo Coupe got the EFI version it's whole life, 83-86 was non-intercooled and T3 turbo; 87-88 was Air-to-air IC'd and had a smaller, more responsive IHI turbo. Conventional wisdom in that crowd is that the IHI is crap, but Jon Moller (he's on here, check out the gold TC in Reader's Rides) did 13.3's on the stock IHI.
Cougar XR-7 from 84-86 got the non-IC'd, EFI, T3 version as well. That same setup ended up in the GT Turbo Mustang for quite a few years. SVO got the IC'd and T3'd version.
Short story nowadays is that they are getting really long in the tooth and weigh a lot (fully dressed stock 2.3T weighs near-as-makes-no-difference to 5.0 EFI with aluminum bits or a carb'd 302). Parts are getting scarce (read: crack-free heads) and they are tons of motors that are more modern, powerful, and faster for cheaper.
Still, they were a unique drivetrain and the cars they came in were pretty awesome in an 80's worldview. I'd like a stone-stock one eventually, but they get fragile at any real power. Lots of people have made right up to 300BHP pretty darn reliably though.
Do the Mazda engine if you want a swap. It's still technically a Ford and is way cooler. I saw one swapped into a SBC with ITB's and it sounded spectacular.