After changing to the nismo ECU I now have a spare one up for sale.
This ECU is from a 2003 6 speed manual Fairlady Z and can be easily fitted in 30mins by removing only a little bit of interior trim.
I have been told (by Big Phil and others) that this model of ECU does not adapt to modfications, therefore allowing power increases but I all honesty I have no hard evidence to back this up.
After about £100
If you require any pics or any more info please let me know
Thanks for looking,
Ian