I was looking up tuning options, and i saw diablosport as one. but for some reason they don't go below 1998, even though 97 and 98 are almost the same, has anyone use a diablosport tuner in a 97 or 96 GT and had it work? thanks!

 

Not almost the same. The 98 is the red headed stepchild of the mustangs because it has the new edge computer and fuel system. The diablo will not work on 96-97 gt. Sniper will.

 

is that just as good?

 

You can go with Sniper or SCT (SCT has screwed me out of money twice so beware).