in regards to the throttle cable give lincorp automotive at ryde a call 8844 4400 and speak to the guys in the nissan section and ask for a Z32 (300zx) throttle cable, their address is
3-5 Grand Ave
Camellia,
Sydney NSW 2142
they're who i went to when i did my plenum change....
And if they dont have any in stock give just jap a call down in kirawee im fairly certain they have some in stock.... their address is
101 Bath Road, Kirrawee
Sydney - NSW
2232
PH. 95450532
hope that helps dude