Stangnsnow2

i have a 88 gt and i put a new zoom stage 3 cutch in with a fidanza flywheel, i put everything back together and i cant get the car in to gear(the car had a cobra clutch in it). i took the transmission out again to see if it was something stupid and i couldnt see anything that i did wrong, so i have no idea what is up now. when i start the car in gear with the clutch to the floor it leaps forward, so it is like the clutch isnt disengaging. anything ideas??? i need some help!