Clutch on DAEWOO

I just purchased a Heavy Duty clutch on Motorsport Promotions and it won't fit. Maybe I'm doing something wrong but I've changed many clutches on my 240sx. This clutch came with a bigger pressure plate that just doesn't fit in the trans. If someone has a solution for this please let me know. Me and my friends are tired of getting our hands smashed by the stupid trans.

I was thinking that maybe the flywheel needs to replaced with a shallower one but where do I get it?

Please HELP!!!!

Thanx.