Do you already have the recipient mustang or are you planning on buying one for this purpose?
MAF cars (late 90-93) slightly complicate things in the wiring. It is just more wires to move, remove, or splice. I'm not sure how much harder it is since I did a MAP car.
check out
www.turboforf.org
and Brad's site
www.nettally.com/silly34/main.htm
for more info
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1990 Lx Turbo convertible