Or you could purchase a KA 4x4 truck pressure plate, have your flywheeel resurfaced to 240mm and new screw holes made for the new pressure plate. Then you could use any 240mm Nissan clutch out there.
Maybe even buy an old 240mm pressure plate, the 300zx and KA 4x4 truck are exactly alike, and add the old diaphragm to the new pressure plate making it a high pressure pp. But it's hard on the leg.
Or as has been said before go with the DP 11lb

flywheel and buy a 240mm Nissan pp.