I am getting a little confused here. Ford did make some throttle body stuff (looks like a carb but has 2 injectors insetead of venturies) back in the mid 80's in cars.
You are asking about an engine in a '90 truck. That truck engine should be a port injected, batch fired system that has a remote air filter fed by twin air tubes.
If you do in fact have a '90 truck with a throttle body, close the hood and quietly walk away. Some butchery has occured and you don't want anything to do with it.
My guess is that you are looking at a stock '90 and are refering to the injection with the wrong terminology. If that is the case, yes the motor can work. But there are issues to address before you start. The intake is tall, don't count on the hood closing. With a 302 and a 3" body lift, then it might. Conversion to a Mustang style intake will help the hood close, but that changes the flow charistics of the motor, the speed density computer may not be happy with this. Continue to roll the snowball down hill from here.
Now if you want to just grab the motor and drop on your old carb and go, that can work too. Still have the same pitfalls with matching engine balance, timing marks, clutch linkage hole, etc. that you would encounter with a stang 5.0
