That's easier said than done on a car that is originally carbed. There are a lot of guys out there with cars that would KILL to have a carb setup they don't have to convert or worry about the computer/harness etc... etc...
For the 84... that thing makes 165hp and is automatic AND is going to lose to a Dodge Caravan in a race... You'll need to pretty much redo everything from the motor to the trans to all the supporting mods. On the plus side, if it is in very good shape... it is a fox in very good shape and your modding opportunities are nearly limitless with the fox and no worrying about emissions on a car that old.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.