the 2.2L KB kit for the GT (2V) needs an aftermarket hood.
the 2.2L KB for the cobra (4V) fits 03/04 cobras with their oem hood. but again it's a different one than the GT so I would say yes u need an aftermarket hood.
it will fit wont it? i have the r hood on and that thing is a beast lol. seriously, that hood looks sweet, i would think you should have enough clearance.