First off, Ford stopped making Turbo Coupes in '88. '84 Mustangs came with 2.3's so find one in a junkyard and grab the motor mounts. Probably any '83-'86 2.3 Mustang will work. TC's had different mounts. The T5
tranny from any 2.3 foxbody will work.
You'll need an LA series ECU from the TC and you'll have to repin your harness connector. You'll need to splice in the VAM connector and install the VAM and install some type of boost control. Here's a couple of good websites that detail the swap for '87-'93 Mustangs. Your '84 shouldn't be much different.
2.3 Tech Mainpage FlemWorld click on Slugstang then '85 how-to's.