Originally posted by: Black88GTA
Your best bet for FI with that motor would be some sort of junkyard turbo setup. That's the same 2.3 block they used in the late '80s TurboCoupes, as well as the Merkur XR4TI and the 84-86 SVO Mustang. The garden variety 4 cyl Mustangs got it as well (naturally aspirated) but produce dismal horsepower numbers. I know, I have one - mine was 105hp brand new.
Upgrading your Ranger to a turbo setup would require (at minimum) the computer, wiring harness, cylinder head, turbo and assorted sensors off of a Ford 2.3-based turbo car, like the ones listed above. It's not an easy conversion, requires lots of knowledge and time to work on it, not to mention a donor car and downtime on your own vehicle. Paying someone else to do it would probably exceed the value of your truck

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If there is even a SC kit available for that motor in your truck, it would probably give you ~50-70hp or so, and cost $2500-$3k, as notfred said.
No offense or anything, but I'm guessing you probably don't have the in-depth knowledge it would require to perform a junkyard turbo upgrade on your own.
I don't think FI for your Ranger is in your future, unfortunately. There's not a whole lot you can do to those motors performance-wise without tearing them apart and getting into the internals.