Ohhi, welcome to AE86DC!
The main parts you'll need for a KE70 to 4AGE conversion ARE:
AE71 / AE86 Crossmember + engine mounts (mounts available from repco / sprints or the like)
4AGE (JDM bluetop is easiest)
wiring loom
ECU
T-50 gearbox from an AE71 or AE86 WITH gearbox crossmember / mount (usually sold with them)
AE71 pedalbox
AE71 clutch master cyl
AE71 clutch solid line
AE71 clutch slave cyl
errr....
probably more bits and shits than that, i can't think properly atm
will post again in the morning, but those are the basics.