Hi zbane, thanks for your reply. It would be great if you can share me the entire EFI section, I'll appreciate it .
About my car, as you said there are only a few of them here, then, if you really like Z's it won't be easy to get a good one, and after that fixing it will be difficult too because there aren't mechanics specialized in this kind of cars.
About the replacement of my engine, a mechanic offer me to change it to a EFI L28 from a 79 ZX, I thought it would be good since the engine I was running need a rebuild, and taking an L28 sounds like a nice upgrade and also the EFI system instead of the original flat top carbs.
Well, to make a long story short, the car was in the mechanic store for about a year, and this guy was not able to install correctly the EFI. So I decide to try my self =), I'm sure that using your info this will be easier to do.