I know what you mean, but with well-produced kits, in theory, it's only a touch more complex than building a tricky injection moulded kit that lacks location pins on the main parts. Of course, not having done one for so long, and with my knackered hands, a 'touch more tricky' could now be translated as "****ing impossible" !
Only one way to find out I suppose, and of course it'll be an on-going project, just to build the thing, never mind detail it, but there's no rush, so worth a go I think.