What Size fitting for "HKS Replica" W/G Vac. Port?

empera

Authorized Vendor
Mar 30, 2005
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0
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Philly.
anyone know what size is that fitting for "HKS Replica" W/G Vac. Port? mine only came with one and i tried to fit a 1/8th on there but didnt fit well...i dont want to strip the threads.