Exhaust A.I.R lines

[Muddytazz]

Does anyone know if these lines going into the stock exhaust manifolds are standard thread or NPT?

 

[FWP]

1/4 NPT thread right in, if that's where you're headed...

 

[Muddytazz]

Yeah, i want to take them damn air lines out and plug them with brass plugs until I can get my headers installed. Since them damn air lines are in the way of me installing my york bracket.