I need a good used ECU for an 84 300ZX Turbo AT. Checked Ebay already and the only ones listed for this model are rusty or like they've been had. NMC and JECS numbers are:

198423710-02P12A18-618371LowTop-FeedZirconium22690-12P01
198423710-02P13A18-636375LowTop-FeedZirconium22690-12P01
198523710-02P70A18-636651LowTop-FeedZirconium22690-12P01
198523710-02P71A18-636655LowTop-FeedZirconium22690-12P01

Thanks for looking