4A-C and 4A-GZE flywheels won't work, however any 4A-GE flywheel will work with an AE86 T50, there are basically 3 types of factory flywheel, 200mm (Largeport 4A-GE excluding most AW11's except very early models), 212mm (Most AW11 Largeport 4A-GE's, Smallport 4A-GE, Silvertop 20V 4A-GE) and Lightene...