I did the same thing on my old '92 GT before we went hog wild with it.
NOS DRY 150 shot (albiet at about 1150 psi bottle pressure )

K&N Filter
H-pipe (no such thing as X pipe back then)
12.60 @ 106mph at what is now BMP running cheap ass 255/50/16 radial tires....
5spd of course