The 94/95 GT's were rated at 215 HP with the Stock Intake and crappy headers.
I have also heard them rated at 225 HP with a 5 speed (I believe unit has talked about this), but I personally haven't seen it rated that high, yet. And unit if you know where you got that number let me know.
Anyway, that is my $0.02
------------------
1995 Mustang GT