welcome to the forum. Doing a wire tuck is very easy in our FWD cars. this is a simple photo of how just moving a couple fuse boxes and a battery transforms the engine bay. There are also others on here that have done something like this before and even to a greater extent.
To what i would really like, I have not got my hands on the diagram and parts right now but am looking into doing this, but if you can do it quicker that be awesome.
you should create a plug and play harness for the nx1600 digital dash into the b14 200sx cars