Looks like a very tidy stocker ute you pick up there Shoota, perfect for a daily and a good base for a later project.
I'd have to agree with Ivan, as it sounds like a very good idea in theory, it will be a fairly big task (I realise you're up for it) and whilst they might operate fine to start with, these sort of gadgets fail very commonly. I love the simplicity of the Datsun 1200 and how easily everything is operated. Its not a new 2011 model and so these mods are very out of place on a 1980's vehicle. Just my thoughts Shoota.