These manifolds can be used with your OEM studs and nuts but to refresh the old rusted units purchase a PRP titanium stud and nut kit here
not to mention making you inconsistent as a drag racer
recommended for OEM crank shafts with some modification
5in Barb is multi-functional and is primarily used with a body-mounted remote filler (not included)
The Tuff Mounts Engine Mount is a direct bolt-up OEM replacement designed for the Nissan R33
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