Martin,
There is no off the shelf W5x gearbox mount (that I know of) as there are a few different ways to couple the box to a 4A engine.
Example: Nights bellhousing position is different to W5x series T50 adapter plate.
Below is one forum members ingenuity.
This is for a xE7x Panel van (think its an AE71), so not quite the same, but will give you an idea of what can be done rather simply with a bit of thought and effort.
Stolen from MAXHAG Pano build.
Food for thought.
With the turbo manifold, IF you are looking for an off the shelf item PM username AJPS (Dave) of these forums and he should be able to get you what you need.
You will need to know what turbo you have?
And what is the flange that bolts to the exhaust manifold.
Example: T28 from Nissan S15 with T2 flange.
Get this information first before you PM Dave.
I hope this helps.
Cheers,
Ali