Welcome mate. There are a few 1200 owners hangin around here but most of them talk on the 1200 forums. I have forgotten the url can someone else please help this fella out.
Most here are L series era peeps 1600,180b's etc. There is however plenty of knowledge here on the more modern Nissan plants. I would sugest a plan of atack as in what needs to be done and then go see a Engineer and talk your project over with him and find out what he requires you to do. Take photos as you go of everything you do so you can show him and all of us too
Cheers