Decisions, decisions, decisions... Hard to give advise on something that is all a matter or personal preference.
I've got a 93GT that I've done the whole, build a motor, want more power, build another motor, want more power, build another motor, well you get it. So I did what any horsepower hungry mustang enthusiast would do...
I bought a terminator cobra.
The 93 GT with just a simple supercharger won't be near the fun as a lightning. But the lightnings are cool. Why not comprimise? Buy a 03-04 cobra. You've got the supercharged HP plus you've still got a mustang.
Ever get in the Miamisburg, OH area, stop by and I'll let you drive my very mildly modded 464hp cobra. Ever drive one and you'll definitly want one.