[84LX89GT]

Go to www.extrudehone.com, they can send you information about their process. They can make your intake manifold, head, or exhaust manifold flow something like 50% more air. Also go to turbo 2.3L websites, there's lots of info about 2.3L performance and the turbo 2.3L people tend to have a lot of cheap ways to improve the performance of the 2.3L

Also try:
http://www.esslingerengineering.com/
www. racerwalsh.com

there's lots of sites for Thunderbird Turbo Coupes, Mustang SVO and even regular early 80's turbo mustangs and fairmonts.

To convert to mass air - air metering, there's alot you'd have to change including the cylinder head because of the waste spark system they have.
Later 2.3L and 2.5L rangers have a header stock, which would increase power a bit. Also, notice that big "FORD" muffler in the middle of the intake tract between your throttle body and air cleaner housing......pull it off and cut out the center with an exacto knife. As you may or may not have noticed, the muffler necks down the intake tract from something like 2" down to 1.5". Open that up and you'll feel a bit of power. Best part is, that it's free.