CORE OPTIONS:
I Have A Core: Select this option if you going to send us your stock intexhaust manifold/turbo housing to port.

I Dont Have A Core: Select this option if you prefer to pay the core charge and wait for the refund after receive your stock exhaust manifold/turbo housing back.

IF YOU SEND THE CORE FIRST, YOU DON´T NEED PAY THE CORE FEE