some things you should know (you didnt mention):
you'll have to swap the whole hydraulic system for the clutch, or get a conversion kit (lever assembly in place of the slave cylinder), not sure if they make one for d-series, dont see why not, they make it for Bs (maybe it interchanges?) and im almost positive the transmission mount is different too.

the speedometer for the S20 trans (Z6 manual transmission) is electric, not cable. your cluster wont work with it.

youre going to need
instrument cluster,
clutch pedal and bracket,
clutch master cylinder,
clutch hydraulics,
the whole longblock,
all the wiring, might as well get everything (fuse box and all)
all the mounts,
the ECU/ECM

i think thats all.