The stock manifold may be used with a J-pipe for mounting a turbo. But a more direct mount is more efficient (allows more power).
Overview
Direct Mount exhaust manifold
album
Stock Manifold with J-pipe
album
This factory A14 forklift exhaust manifold might be useful:
album
Exhaust manifold idea
album
Big bore 1.5 inch mandrel bent steam pipe with HPC coating
[http://datsun1200.com/modules/myalbum/photo.php?lid=18016
]
datto1000wagon
¤